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CWE CWE-20✕Has a public PoC✕
Overview 46 matches · 22 protected · 20 exploited · 10 CISA KEV · 27 EPSS ≥ 0.5
46matches 22protected47.8% 20exploited43.5% 10CISA KEV21.7% 27EPSS ≥ 0.558.7%
Protected by Waratek 23 50.0% Rule in development 0 0.0% Mitigation candidate 23 50.0% No exploit published 0 0.0%
Critical 19 41.3% High 18 39.1% Medium 9 19.6% Low 0 0.0% None 0 0.0% Unknown 0 0.0%
blocked by ARMR today 22 47.8% partly blocked 1 2.2% not blocked 23 50.0% not established 0 0.0% unrecorded 0 0.0%
Exploited 20 43.5% Working exploit published 22 47.8% Proof of concept only 4 8.7% Forecast only 0 0.0% No public exploit 0 0.0%
split by peak 6 / year
Mitigation candidate: 23Protected by Waratek: 23 Medium: 9High: 18Critical: 19 not blocked: 23partly blocked: 1blocked by ARMR today: 22 Proof of concept only: 4Working exploit published: 22Exploited: 20
20071 Mitigation candidate1 Medium1 not blocked1 Working exploit published1 20080 20091 Mitigation candidate1 Medium1 not blocked1 Working exploit published1 20101 Mitigation candidate1 Medium1 not blocked1 Working exploit published1 20111 Mitigation candidate1 High1 not blocked1 Working exploit published1 20122 Protected by Waratek1 Mitigation candidate1 Critical1 Medium1 blocked by ARMR today1 not blocked1 Exploited1 Working exploit published1 20133 Protected by Waratek2 Mitigation candidate1 Critical1 High1 Medium1 blocked by ARMR today2 not blocked1 Exploited1 Working exploit published1 Proof of concept only1 20143 Protected by Waratek2 Mitigation candidate1 High2 Medium1 blocked by ARMR today2 not blocked1 Exploited1 Working exploit published2 20151 Protected by Waratek1 Medium1 blocked by ARMR today1 Working exploit published1 20165 Protected by Waratek2 Mitigation candidate3 Critical3 High2 blocked by ARMR today2 not blocked3 Exploited1 Working exploit published3 Proof of concept only1 20175 Protected by Waratek5 Critical4 High1 blocked by ARMR today5 Exploited3 Working exploit published2 20186 Protected by Waratek3 Mitigation candidate3 Critical2 High4 blocked by ARMR today3 not blocked3 Exploited3 Working exploit published3 20191 Protected by Waratek1 High1 partly blocked1 Exploited1 20204 Mitigation candidate4 Critical3 High1 not blocked4 Exploited2 Working exploit published2 20212 Protected by Waratek2 Critical1 Medium1 blocked by ARMR today2 Exploited2 20221 Protected by Waratek1 Critical1 blocked by ARMR today1 Exploited1 20231 Mitigation candidate1 Medium1 not blocked1 Working exploit published1 20243 Protected by Waratek1 Mitigation candidate2 Critical1 High2 blocked by ARMR today1 not blocked2 Exploited1 Working exploit published1 Proof of concept only1 20250 20265 Protected by Waratek2 Mitigation candidate3 Critical2 High3 blocked by ARMR today2 not blocked3 Exploited3 Working exploit published1 Proof of concept only1
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CVE Severity Published▾ Status Exploitation Description
CVE-2026-16723 Critical 2026-07-23 Protected by Waratek Exploited A remote code execution (RCE) vulnerability exists in fastjson 1.2.68 through 1.2.83. This vulnerability is exploitable under fastjson's stock default configuration — no AutoType enablement required, no classpath gadget required.
CVE-2026-41042 Critical 2026-07-08 Mitigation candidate Working exploit published Unauthenticated callers can supply a malicious H2 JDBC URL through the testConnection API, which executes arbitrary Java code on the server via H2's INIT parameter. Vulnerability in Apache Gravitino. This issue affects Apache Gravitino: before 1.2.1. Users are recommended to upgrade to version 1.2.1, which fixes the issue. This issue only happens when using H2, and H2 is mainly used for testing and local development. Also, Gravitino is typically deployed in the internal environment, so the severity is low.
CVE-2026-42588 High 2026-06-01 Mitigation candidate Proof of concept only Improper Input Validation, Improper Control of Generation of Code ('Code Injection') vulnerability in Apache ActiveMQ Broker, Apache ActiveMQ All, Apache ActiveMQ. Apache ActiveMQ Classic exposes the Jolokia JMX-HTTP bridge at /api/jolokia/ on the web console. The default Jolokia access policy permits exec operations on all ActiveMQ MBeans (org.apache.activemq:*), including BrokerService.addNetworkConnector(String). An authenticated attacker can invoke these operations with a crafted discovery URI that triggers the VM transport's brokerConfig parameter using the "masterslave:// " URL which can allow loading a Spring XML application context using ResourceXmlApplicationContext. Because Spring's ResourceXmlApplicationContext instantiates all singleton beans before the BrokerService validates the configuration, arbitrary code execution occurs on the broker's JVM through bean factory methods such as Runtime.exec(). This issue affects Apache ActiveMQ Broker: before 5.19.7, from 6.0.0 before 6.2.6; Apache ActiveMQ All: before 5.19.7, from 6.0.0 before 6.2.6; Apache ActiveMQ: before 5.19.7, from 6.0.0 before 6.2.6. Users are recommended to upgrade to version 5.19.7 or 6.2.6, which fixes the issue.
CVE-2026-40466 High 2026-04-24 Mitigation candidate Exploited Improper Input Validation, Improper Control of Generation of Code ('Code Injection') vulnerability in Apache ActiveMQ Broker, Apache ActiveMQ All, Apache ActiveMQ. An authenticated attacker may bypass the fix in CVE-2026-34197 by adding a connector using an HTTP Discovery transport via BrokerView.addNetworkConnector or BrokerView.addConnector through Jolokia if the activemq-http module is on the classpath. A malicious HTTP endpoint can return a VM transport through the HTTP URI which will bypass the validation added in CVE-2026-34197. The attacker can then use the VM transport's brokerConfig parameter to load a remote Spring XML application context using ResourceXmlApplicationContext. Because Spring's ResourceXmlApplicationContext instantiates all singleton beans before the BrokerService validates the configuration, arbitrary code execution occurs on the broker's JVM through bean factory methods such as Runtime.exec(). This issue affects Apache ActiveMQ Broker: before 5.19.6, from 6.0.0 before 6.2.5; Apache ActiveMQ All: before 5.19.6, from 6.0.0 before 6.2.5; Apache ActiveMQ: before 5.19.6, from 6.0.0 before 6.2.5. Users are recommended to upgrade to version 5.19.6 or 6.2.5, which fixes the issue.
CVE-2026-34197 High 2026-04-07 Protected by Waratek Exploited Improper Input Validation, Improper Control of Generation of Code ('Code Injection') vulnerability in Apache ActiveMQ Broker, Apache ActiveMQ. Apache ActiveMQ Classic exposes the Jolokia JMX-HTTP bridge at /api/jolokia/ on the web console. The default Jolokia access policy permits exec operations on all ActiveMQ MBeans (org.apache.activemq:*), including BrokerService.addNetworkConnector(String) and BrokerService.addConnector(String). An authenticated attacker can invoke these operations with a crafted discovery URI that triggers the VM transport's brokerConfig parameter to load a remote Spring XML application context using ResourceXmlApplicationContext. Because Spring's ResourceXmlApplicationContext instantiates all singleton beans before the BrokerService validates the configuration, arbitrary code execution occurs on the broker's JVM through bean factory methods such as Runtime.exec(). This issue affects Apache ActiveMQ Broker: before 5.19.4, from 6.0.0 before 6.2.3; Apache ActiveMQ All: before 5.19.4, from 6.0.0 before 6.2.3; Apache ActiveMQ: before 5.19.4, from 6.0.0 before 6.2.3. Users are recommended to upgrade to version 5.19.4 or 6.2.3, which fixes the issue
CVE-2024-30188 High 2024-08-12 Mitigation candidate Working exploit published File read and write vulnerability in Apache DolphinScheduler ,  authenticated users can illegally access additional resource files. This issue affects Apache DolphinScheduler: from 3.1.0 before 3.2.2. Users are recommended to upgrade to version 3.2.2, which fixes the issue.
CVE-2024-5276 Critical 2024-06-25 Protected by Waratek Exploited A SQL Injection vulnerability in Fortra FileCatalyst Workflow allows an attacker to modify application data.  Likely impacts include creation of administrative users and deletion or modification of data in the application database. Data exfiltration via SQL injection is not possible using this vulnerability. Successful unauthenticated exploitation requires a Workflow system with anonymous access enabled, otherwise an authenticated user is required. This issue affects all versions of FileCatalyst Workflow from 5.1.6 Build 135 and earlier.
CVE-2024-24549 High 2024-03-13 Mitigation candidate Proof of concept only Denial of Service due to improper input validation vulnerability for HTTP/2 requests in Apache Tomcat. When processing an HTTP/2 request, if the request exceeded any of the configured limits for headers, the associated HTTP/2 stream was not reset until after all of the headers had been processed.This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.0-M16, from 10.1.0-M1 through 10.1.18, from 9.0.0-M1 through 9.0.85, from 8.5.0 through 8.5.98. Other, older, EOL versions may also be affected. Users are recommended to upgrade to version 11.0.0-M17, 10.1.19, 9.0.86 or 8.5.99 which fix the issue.
CVE-2023-45648 Medium 2023-10-10 Mitigation candidate Working exploit published Improper Input Validation vulnerability in Apache Tomcat.Tomcat from 11.0.0-M1 through 11.0.0-M11, from 10.1.0-M1 through 10.1.13, from 9.0.0-M1 through 9.0.81 and from 8.5.0 through 8.5.93 did not correctly parse HTTP trailer headers. A specially crafted, invalid trailer header could cause Tomcat to treat a single request as multiple requests leading to the possibility of request smuggling when behind a reverse proxy. Older, EOL versions may also be affected. Users are recommended to upgrade to version 11.0.0-M12 onwards, 10.1.14 onwards, 9.0.81 onwards or 8.5.94 onwards, which fix the issue.
CVE-2022-1471 Critical 2022-12-01 Protected by Waratek Exploited SnakeYaml's Constructor() class does not restrict types which can be instantiated during deserialization. Deserializing yaml content provided by an attacker can lead to remote code execution. We recommend using SnakeYaml's SafeConsturctor when parsing untrusted content to restrict deserialization. We recommend upgrading to version 2.0 and beyond.
CVE-2021-45105 Medium 2021-12-18 Protected by Waratek Exploited Apache Log4j2 versions 2.0-alpha1 through 2.16.0 (excluding 2.12.3 and 2.3.1) did not protect from uncontrolled recursion from self-referential lookups. This allows an attacker with control over Thread Context Map data to cause a denial of service when a crafted string is interpreted. This issue was fixed in Log4j 2.17.0, 2.12.3, and 2.3.1.
CVE-2021-44228 Critical 2021-12-10 Protected by Waratek Exploited Apache Log4j2 2.0-beta9 through 2.15.0 (excluding security releases 2.12.2, 2.12.3, and 2.3.1) JNDI features used in configuration, log messages, and parameters do not protect against attacker controlled LDAP and other JNDI related endpoints. An attacker who can control log messages or log message parameters can execute arbitrary code loaded from LDAP servers when message lookup substitution is enabled. From log4j 2.15.0, this behavior has been disabled by default. From version 2.16.0 (along with 2.12.2, 2.12.3, and 2.3.1), this functionality has been completely removed. Note that this vulnerability is specific to log4j-core and does not affect log4net, log4cxx, or other Apache Logging Services projects.
CVE-2020-13942 Critical 2020-11-24 Mitigation candidate Exploited It is possible to inject malicious OGNL or MVEL scripts into the /context.json public endpoint. This was partially fixed in 1.5.1 but a new attack vector was found. In Apache Unomi version 1.5.2 scripts are now completely filtered from the input. It is highly recommended to upgrade to the latest available version of the 1.5.x release to fix this problem.
CVE-2020-11975 Critical 2020-06-05 Mitigation candidate Exploited Apache Unomi allows conditions to use OGNL scripting which offers the possibility to call static Java classes from the JDK that could execute code with the permission level of the running Java process.
CVE-2020-10204 High 2020-04-01 Mitigation candidate Working exploit published Sonatype Nexus Repository before 3.21.2 allows Remote Code Execution.
CVE-2014-9390 Critical 2020-02-12 Mitigation candidate Working exploit published Git before 1.8.5.6, 1.9.x before 1.9.5, 2.0.x before 2.0.5, 2.1.x before 2.1.4, and 2.2.x before 2.2.1 on Windows and OS X; Mercurial before 3.2.3 on Windows and OS X; Apple Xcode before 6.2 beta 3; mine all versions before 08-12-2014; libgit2 all versions up to 0.21.2; Egit all versions before 08-12-2014; and JGit all versions before 08-12-2014 allow remote Git servers to execute arbitrary commands via a tree containing a crafted .git/config file with (1) an ignorable Unicode codepoint, (2) a git~1/config representation, or (3) mixed case that is improperly handled on a case-insensitive filesystem.
CVE-2019-17558 High 2019-12-30 Protected by Waratek Exploited Apache Solr 5.0.0 to Apache Solr 8.3.1 are vulnerable to a Remote Code Execution through the VelocityResponseWriter. A Velocity template can be provided through Velocity templates in a configset `velocity/` directory or as a parameter. A user defined configset could contain renderable, potentially malicious, templates. Parameter provided templates are disabled by default, but can be enabled by setting `params.resource.loader.enabled` by defining a response writer with that setting set to `true`. Defining a response writer requires configuration API access. Solr 8.4 removed the params resource loader entirely, and only enables the configset-provided template rendering when the configset is `trusted` (has been uploaded by an authenticated user).
CVE-2018-11776 High 2018-08-22 Protected by Waratek Exploited Apache Struts versions 2.3 to 2.3.34 and 2.5 to 2.5.16 suffer from possible Remote Code Execution when alwaysSelectFullNamespace is true (either by user or a plugin like Convention Plugin) and then: results are used with no namespace and in same time, its upper package have no or wildcard namespace and similar to results, same possibility when using url tag which doesn't have value and action set and in same time, its upper package have no or wildcard namespace.
CVE-2018-1999002 High 2018-07-23 Mitigation candidate Working exploit published A arbitrary file read vulnerability exists in Jenkins 2.132 and earlier, 2.121.1 and earlier in the Stapler web framework's org/kohsuke/stapler/Stapler.java that allows attackers to send crafted HTTP requests returning the contents of any file on the Jenkins master file system that the Jenkins master has access to.
CVE-2018-1273 Critical 2018-04-11 Protected by Waratek Exploited Spring Data Commons, versions prior to 1.13 to 1.13.10, 2.0 to 2.0.5, and older unsupported versions, contain a property binder vulnerability caused by improper neutralization of special elements. An unauthenticated remote malicious user (or attacker) can supply specially crafted request parameters against Spring Data REST backed HTTP resources or using Spring Data's projection-based request payload binding hat can lead to a remote code execution attack.
CVE-2018-10054 High 2018-04-11 Mitigation candidate Working exploit published H2 1.4.197, as used in Datomic before 0.9.5697 and other products, allows remote code execution because CREATE ALIAS can execute arbitrary Java code. NOTE: the vendor's position is "h2 is not designed to be run outside of a secure environment."
CVE-2018-1321 High 2018-03-20 Mitigation candidate Working exploit published An administrator with report and template entitlements in Apache Syncope 1.2.x before 1.2.11, 2.0.x before 2.0.8, and unsupported releases 1.0.x and 1.1.x which may be also affected, can use XSL Transformations (XSLT) to perform malicious operations, including but not limited to file read, file write, and code execution.
CVE-2017-8046 Critical 2018-01-04 Protected by Waratek Exploited Malicious PATCH requests submitted to servers using Spring Data REST versions prior to 2.6.9 (Ingalls SR9), versions prior to 3.0.1 (Kay SR1) and Spring Boot versions prior to 1.5.9, 2.0 M6 can use specially crafted JSON data to run arbitrary Java code.
CVE-2017-12611 Critical 2017-09-20 Protected by Waratek Exploited In Apache Struts 2.0.0 through 2.3.33 and 2.5 through 2.5.10.1, using an unintentional expression in a Freemarker tag instead of string literals can lead to a RCE attack.
CVE-2017-9791 Critical 2017-07-10 Protected by Waratek Exploited The Struts 1 plugin in Apache Struts 2.1.x and 2.3.x might allow remote code execution via a malicious field value passed in a raw message to the ActionMessage.
CVE-2016-6816 High 2017-03-20 Protected by Waratek Working exploit published The code in Apache Tomcat 9.0.0.M1 to 9.0.0.M11, 8.5.0 to 8.5.6, 8.0.0.RC1 to 8.0.38, 7.0.0 to 7.0.72, and 6.0.0 to 6.0.47 that parsed the HTTP request line permitted invalid characters. This could be exploited, in conjunction with a proxy that also permitted the invalid characters but with a different interpretation, to inject data into the HTTP response. By manipulating the HTTP response the attacker could poison a web-cache, perform an XSS attack and/or obtain sensitive information from requests other then their own.
CVE-2017-5638 Critical 2017-03-11 Protected by Waratek Exploited The Jakarta Multipart parser in Apache Struts 2 2.3.x before 2.3.32 and 2.5.x before 2.5.10.1 has incorrect exception handling and error-message generation during file-upload attempts, which allows remote attackers to execute arbitrary commands via a crafted Content-Type, Content-Disposition, or Content-Length HTTP header, as exploited in the wild in March 2017 with a Content-Type header containing a #cmd= string.
CVE-2017-3241 Critical 2017-01-27 Protected by Waratek Working exploit published Vulnerability in the Java SE, Java SE Embedded, JRockit component of Oracle Java SE (subcomponent: RMI). Supported versions that are affected are Java SE: 6u131, 7u121 and 8u112; Java SE Embedded: 8u111; JRockit: R28.3.12. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Java SE, Java SE Embedded, JRockit. While the vulnerability is in Java SE, Java SE Embedded, JRockit, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in takeover of Java SE, Java SE Embedded, JRockit. Note: This vulnerability can only be exploited by supplying data to APIs in the specified Component without using Untrusted Java Web Start applications or Untrusted Java applets, such as through a web service. CVSS v3.0 Base Score 9.0 (Confidentiality, Integrity and Availability impacts).
CVE-2016-1240 High 2016-10-03 Mitigation candidate Working exploit published The Tomcat init script in the tomcat7 package before 7.0.56-3+deb8u4 and tomcat8 package before 8.0.14-1+deb8u3 on Debian jessie and the tomcat6 and libtomcat6-java packages before 6.0.35-1ubuntu3.8 on Ubuntu 12.04 LTS, the tomcat7 and libtomcat7-java packages before 7.0.52-1ubuntu0.7 on Ubuntu 14.04 LTS, and tomcat8 and libtomcat8-java packages before 8.0.32-1ubuntu1.2 on Ubuntu 16.04 LTS allows local users with access to the tomcat account to gain root privileges via a symlink attack on the Catalina log file, as demonstrated by /var/log/tomcat7/catalina.out.
CVE-2016-3087 Critical 2016-06-07 Mitigation candidate Working exploit published Apache Struts 2.3.19 to 2.3.20.2, 2.3.21 to 2.3.24.1, and 2.3.25 to 2.3.28, when Dynamic Method Invocation is enabled, allow remote attackers to execute arbitrary code via vectors related to an ! (exclamation mark) operator to the REST Plugin.
CVE-2016-3088 Critical 2016-06-01 Protected by Waratek Exploited The Fileserver web application in Apache ActiveMQ 5.x before 5.14.0 allows remote attackers to upload and execute arbitrary files via an HTTP PUT followed by an HTTP MOVE request.
CVE-2016-0792 High 2016-04-07 Mitigation candidate Working exploit published Multiple unspecified API endpoints in Jenkins before 1.650 and LTS before 1.642.2 allow remote authenticated users to execute arbitrary code via serialized data in an XML file, related to XStream and groovy.util.Expando.
CVE-2015-5254 Critical 2016-01-08 Protected by Waratek Proof of concept only Apache ActiveMQ 5.x before 5.13.0 does not restrict the classes that can be serialized in the broker, which allows remote attackers to execute arbitrary code via a crafted serialized Java Message Service (JMS) ObjectMessage object.
CVE-2015-1833 Medium 2015-05-29 Protected by Waratek Working exploit published XML external entity (XXE) vulnerability in Apache Jackrabbit before 2.0.6, 2.2.x before 2.2.14, 2.4.x before 2.4.6, 2.6.x before 2.6.6, 2.8.x before 2.8.1, and 2.10.x before 2.10.1 allows remote attackers to read arbitrary files and send requests to intranet servers via a crafted WebDAV request.
CVE-2014-0114 High 2014-04-30 Protected by Waratek Exploited Apache Commons BeanUtils, as distributed in lib/commons-beanutils-1.8.0.jar in Apache Struts 1.x through 1.3.10 and in other products requiring commons-beanutils through 1.9.2, does not suppress the class property, which allows remote attackers to "manipulate" the ClassLoader and execute arbitrary code via the class parameter, as demonstrated by the passing of this parameter to the getClass method of the ActionForm object in Struts 1.
CVE-2014-2880 Medium 2014-04-17 Protected by Waratek Working exploit published Open redirect vulnerability in the Oracle Identity Manager component in Oracle Fusion Middleware 11.1.1.5, 11.1.1.7, 11.1.2.1, and 11.1.2.2 allows remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via a URL in the backUrl parameter in a changepwd action to identity/faces/firstlogin.
CVE-2014-0050 High 2014-04-01 Mitigation candidate Working exploit published MultipartStream.java in Apache Commons FileUpload before 1.3.1, as used in Apache Tomcat, JBoss Web, and other products, allows remote attackers to cause a denial of service (infinite loop and CPU consumption) via a crafted Content-Type header that bypasses a loop's intended exit conditions.
CVE-2013-2186 High 2013-10-28 Protected by Waratek Proof of concept only The DiskFileItem class in Apache Commons FileUpload, as used in Red Hat JBoss BRMS 5.3.1; JBoss Portal 4.3 CP07, 5.2.2, and 6.0.0; and Red Hat JBoss Web Server 1.0.2 allows remote attackers to write to arbitrary files via a NULL byte in a file name in a serialized instance.
CVE-2013-2251 Critical 2013-07-20 Protected by Waratek Exploited Apache Struts 2.0.0 through 2.3.15 allows remote attackers to execute arbitrary OGNL expressions via a parameter with a crafted (1) action:, (2) redirect:, or (3) redirectAction: prefix.
CVE-2013-2248 Medium 2013-07-20 Mitigation candidate Working exploit published Multiple open redirect vulnerabilities in Apache Struts 2.0.0 through 2.3.15 allow remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via a URL in a parameter using the (1) redirect: or (2) redirectAction: prefix.
CVE-2012-0391 Critical 2012-01-08 Protected by Waratek Exploited The ExceptionDelegator component in Apache Struts before 2.2.3.1 interprets parameter values as OGNL expressions during certain exception handling for mismatched data types of properties, which allows remote attackers to execute arbitrary Java code via a crafted parameter.
CVE-2011-4858 Medium 2012-01-05 Mitigation candidate Working exploit published Apache Tomcat before 5.5.35, 6.x before 6.0.35, and 7.x before 7.0.23 computes hash values for form parameters without restricting the ability to trigger hash collisions predictably, which allows remote attackers to cause a denial of service (CPU consumption) by sending many crafted parameters.
CVE-2011-5034 High 2011-12-30 Mitigation candidate Working exploit published Apache Geronimo 2.2.1 and earlier computes hash values for form parameters without restricting the ability to trigger hash collisions predictably, which allows remote attackers to cause a denial of service (CPU consumption) by sending many crafted parameters. NOTE: this might overlap CVE-2011-4461.
CVE-2010-1587 Medium 2010-04-28 Mitigation candidate Working exploit published The Jetty ResourceHandler in Apache ActiveMQ 5.x before 5.3.2 and 5.4.x before 5.4.0 allows remote attackers to read JSP source code via a // (slash slash) initial substring in a URI for (1) admin/index.jsp, (2) admin/queues.jsp, or (3) admin/topics.jsp.
CVE-2008-6504 Medium 2009-03-23 Mitigation candidate Working exploit published ParametersInterceptor in OpenSymphony XWork 2.0.x before 2.0.6 and 2.1.x before 2.1.2, as used in Apache Struts and other products, does not properly restrict # (pound sign) references to context objects, which allows remote attackers to execute Object-Graph Navigation Language (OGNL) statements and modify server-side context objects, as demonstrated by use of a \u0023 representation for the # character.
CVE-2007-4556 Medium 2007-08-28 Mitigation candidate Working exploit published Struts support in OpenSymphony XWork before 1.2.3, and 2.x before 2.0.4, as used in WebWork and Apache Struts, recursively evaluates all input as an Object-Graph Navigation Language (OGNL) expression when altSyntax is enabled, which allows remote attackers to cause a denial of service (infinite loop) or execute arbitrary code via form input beginning with a "%{" sequence and ending with a "}" character.