Oracle Critical Security Patch Update May 2026

Released May 2026 · Oracle's advisory ↗ · ← Critical Patch Update, April 2026 · Security Patch Update, June 2026 →

74 CVEs in this release, one square each

By status

3Protected by Waratek 3Mitigation candidate 31No exploit published 37Not applicable 3Exploited, marked by the ring

No exploit published. For 22 of them, Oracle's security advisory is the source of public detail.

Protected by Waratek. Waratek RASP can block exploitation of these on systems that have not applied the patch yet.

Look up CVE IDs Status Exploitation Severity

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Overview 11 matches · 1 protected · 1 exploited · 1 CISA KEV · 0 public PoC · 0 EPSS ≥ 0.5

11matches 1protected9.1% 1exploited9.1% 1CISA KEV9.1% 0public PoC0.0% 0EPSS ≥ 0.50.0%

Protected by Waratek 1 9.1% Rule in development 0 0.0% Mitigation candidate 0 0.0% No exploit published 10 90.9%

Critical 11 100.0% High 0 0.0% Medium 0 0.0% Low 0 0.0% None 0 0.0% Unknown 0 0.0%

blocked by ARMR today 1 9.1% partly blocked 0 0.0% not blocked 10 90.9% not established 0 0.0% unrecorded 0 0.0%

Exploited 1 9.1% Working exploit published 0 0.0% Proof of concept only 1 9.1% Forecast only 0 0.0% No public exploit 9 81.8%

split by StatusSeverityProtectionExploit maturity peak 8 / month

Apr 263 No exploit published3 Critical3 not blocked3 Proof of concept only1 No public exploit2 May 268 Protected by Waratek1 No exploit published7 Critical8 blocked by ARMR today1 not blocked7 Exploited1 No public exploit7

Apr 26May 26

11 matches Sign in to download these CVEs as CSV or JSON, or to follow them in a feed.

CVE	Severity	Published▾	Status	Exploitation	Description
CVE-2026-46840	Critical	2026-05-28	No exploit published	No public exploit	Vulnerability in Oracle REST Data Services (component: Backend-as-a-Service). Supported versions that are affected are 24.2.0-26.1.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTPS to compromise Oracle REST Data Services. While the vulnerability is in Oracle REST Data Services, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in takeover of Oracle REST Data Services. CVSS 3.1 Base Score 10.0 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H).
CVE-2026-46839	Critical	2026-05-28	No exploit published	No public exploit	Vulnerability in Oracle REST Data Services (component: Core). Supported versions that are affected are 24.2.0-26.1.0. Easily exploitable vulnerability allows low privileged attacker with network access via HTTPS to compromise Oracle REST Data Services. While the vulnerability is in Oracle REST Data Services, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in takeover of Oracle REST Data Services. CVSS 3.1 Base Score 9.9 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H).
CVE-2026-46824	Critical	2026-05-28	No exploit published	No public exploit	Vulnerability in the Oracle Universal Work Queue product of Oracle E-Business Suite (component: Work Provider Site Level Administration). Supported versions that are affected are 12.2.3-12.2.15. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle Universal Work Queue. While the vulnerability is in Oracle Universal Work Queue, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in takeover of Oracle Universal Work Queue. CVSS 3.1 Base Score 9.9 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H).
CVE-2026-46822	Critical	2026-05-28	No exploit published	No public exploit	Vulnerability in the Oracle iAssets product of Oracle E-Business Suite (component: Internal Operations). Supported versions that are affected are 12.2.3-12.2.15. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle iAssets. While the vulnerability is in Oracle iAssets, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in takeover of Oracle iAssets. CVSS 3.1 Base Score 9.9 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H).
CVE-2026-46819	Critical	2026-05-28	No exploit published	No public exploit	Vulnerability in the Oracle Internet Procurement Connector product of Oracle E-Business Suite (component: Internal Operations). Supported versions that are affected are 12.2.3-12.2.15. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Internet Procurement Connector. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Oracle Internet Procurement Connector accessible data as well as unauthorized access to critical data or complete access to all Oracle Internet Procurement Connector accessible data. CVSS 3.1 Base Score 9.1 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N).
CVE-2026-46817	Critical	2026-05-28	Protected by Waratek	Exploited	Vulnerability in the Oracle Payments product of Oracle E-Business Suite (component: File Transmission). Supported versions that are affected are 12.2.3-12.2.15. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Payments. Successful attacks of this vulnerability can result in takeover of Oracle Payments. CVSS 3.1 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
CVE-2026-46775	Critical	2026-05-28	No exploit published	No public exploit	Vulnerability in Oracle REST Data Services (component: Core). Supported versions that are affected are 24.2.0-26.1.0. Easily exploitable vulnerability allows low privileged attacker with network access via HTTPS to compromise Oracle REST Data Services. While the vulnerability is in Oracle REST Data Services, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in takeover of Oracle REST Data Services. CVSS 3.1 Base Score 9.9 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H).
CVE-2026-34311	Critical	2026-05-28	No exploit published	No public exploit	Vulnerability in the Oracle Hospitality OPERA 5 Property Services product of Oracle Hospitality Applications (component: Opera). Supported versions that are affected are 5.6.19.24, 5.6.22, 5.6.25.19, 5.6.27.6 and 5.6.28. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Hospitality OPERA 5 Property Services. Successful attacks of this vulnerability can result in takeover of Oracle Hospitality OPERA 5 Property Services. CVSS 3.1 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
CVE-2026-33557	Critical	2026-04-20	No exploit published	No public exploit	A possible security vulnerability has been identified in Apache Kafka. By default, the broker property `sasl.oauthbearer.jwt.validator.class` is set to `org.apache.kafka.common.security.oauthbearer.DefaultJwtValidator`. It accepts any JWT token without validating its signature, issuer, or audience. An attacker can generate a JWT token from any issuer with the `preferred_username` set to any user, and the broker will accept it. We advise the Kafka users using kafka v4.1.0 or v4.1.1 to set the config `sasl.oauthbearer.jwt.validator.class` to `org.apache.kafka.common.security.oauthbearer.BrokerJwtValidator` explicitly to avoid this vulnerability. Since Kafka v4.1.2 and v4.2.0 and later, the issue is fixed and will correctly validate the JWT token.
CVE-2026-2332	Critical	2026-04-14	No exploit published	Proof of concept only	In Eclipse Jetty, the HTTP/1.1 parser is vulnerable to request smuggling when chunk extensions are used, similar to the "funky chunks" techniques outlined here: * https://w4ke.info/2025/06/18/funky-chunks.html * https://w4ke.info/2025/10/29/funky-chunks-2.html Jetty terminates chunk extension parsing at \r\n inside quoted strings instead of treating this as an error. POST / HTTP/1.1 Host: localhost Transfer-Encoding: chunked 1;ext="val X 0 GET /smuggled HTTP/1.1 ... Note how the chunk extension does not close the double quotes, and it is able to inject a smuggled request.
CVE-2026-29145	Critical	2026-04-09	No exploit published	No public exploit	CLIENT_CERT authentication does not fail as expected for some scenarios when soft fail is disabled vulnerability in Apache Tomcat, Apache Tomcat Native. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.18, from 10.1.0-M7 through 10.1.52, from 9.0.83 through 9.0.115; Apache Tomcat Native: from 1.1.23 through 1.1.34, from 1.2.0 through 1.2.39, from 1.3.0 through 1.3.6, from 2.0.0 through 2.0.13. Users are recommended to upgrade to version Tomcat Native 1.3.7 or 2.0.14 and Tomcat 11.0.20, 10.1.53 and 9.0.116, which fix the issue.

CVE

Severity

Published▾

Status

Exploitation

Description

CVE-2026-46840

Critical

2026-05-28

No exploit published

No public exploit

Vulnerability in Oracle REST Data Services (component: Backend-as-a-Service). Supported versions that are affected are 24.2.0-26.1.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTPS to compromise Oracle REST Data Services. While the vulnerability is in Oracle REST Data Services, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in takeover of Oracle REST Data Services. CVSS 3.1 Base Score 10.0 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H).

CVE-2026-46839

Critical

2026-05-28

No exploit published

No public exploit

Vulnerability in Oracle REST Data Services (component: Core). Supported versions that are affected are 24.2.0-26.1.0. Easily exploitable vulnerability allows low privileged attacker with network access via HTTPS to compromise Oracle REST Data Services. While the vulnerability is in Oracle REST Data Services, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in takeover of Oracle REST Data Services. CVSS 3.1 Base Score 9.9 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H).

CVE-2026-46824

Critical

2026-05-28

No exploit published

No public exploit

Vulnerability in the Oracle Universal Work Queue product of Oracle E-Business Suite (component: Work Provider Site Level Administration). Supported versions that are affected are 12.2.3-12.2.15. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle Universal Work Queue. While the vulnerability is in Oracle Universal Work Queue, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in takeover of Oracle Universal Work Queue. CVSS 3.1 Base Score 9.9 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H).

CVE-2026-46822

Critical

2026-05-28

No exploit published

No public exploit

Vulnerability in the Oracle iAssets product of Oracle E-Business Suite (component: Internal Operations). Supported versions that are affected are 12.2.3-12.2.15. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle iAssets. While the vulnerability is in Oracle iAssets, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in takeover of Oracle iAssets. CVSS 3.1 Base Score 9.9 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H).

CVE-2026-46819

Critical

2026-05-28

No exploit published

No public exploit

Vulnerability in the Oracle Internet Procurement Connector product of Oracle E-Business Suite (component: Internal Operations). Supported versions that are affected are 12.2.3-12.2.15. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Internet Procurement Connector. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Oracle Internet Procurement Connector accessible data as well as unauthorized access to critical data or complete access to all Oracle Internet Procurement Connector accessible data. CVSS 3.1 Base Score 9.1 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N).

CVE-2026-46817

Critical

2026-05-28

Protected by Waratek

Exploited

Vulnerability in the Oracle Payments product of Oracle E-Business Suite (component: File Transmission). Supported versions that are affected are 12.2.3-12.2.15. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Payments. Successful attacks of this vulnerability can result in takeover of Oracle Payments. CVSS 3.1 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

CVE-2026-46775

Critical

2026-05-28

No exploit published

No public exploit

CVE-2026-34311

Critical

2026-05-28

No exploit published

No public exploit

Vulnerability in the Oracle Hospitality OPERA 5 Property Services product of Oracle Hospitality Applications (component: Opera). Supported versions that are affected are 5.6.19.24, 5.6.22, 5.6.25.19, 5.6.27.6 and 5.6.28. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Hospitality OPERA 5 Property Services. Successful attacks of this vulnerability can result in takeover of Oracle Hospitality OPERA 5 Property Services. CVSS 3.1 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

CVE-2026-33557

Critical

2026-04-20

No exploit published

No public exploit

A possible security vulnerability has been identified in Apache Kafka. By default, the broker property `sasl.oauthbearer.jwt.validator.class` is set to `org.apache.kafka.common.security.oauthbearer.DefaultJwtValidator`. It accepts any JWT token without validating its signature, issuer, or audience. An attacker can generate a JWT token from any issuer with the `preferred_username` set to any user, and the broker will accept it. We advise the Kafka users using kafka v4.1.0 or v4.1.1 to set the config `sasl.oauthbearer.jwt.validator.class` to `org.apache.kafka.common.security.oauthbearer.BrokerJwtValidator` explicitly to avoid this vulnerability. Since Kafka v4.1.2 and v4.2.0 and later, the issue is fixed and will correctly validate the JWT token.

CVE-2026-2332

Critical

2026-04-14

No exploit published

Proof of concept only

In Eclipse Jetty, the HTTP/1.1 parser is vulnerable to request smuggling when chunk extensions are used, similar to the "funky chunks" techniques outlined here: * https://w4ke.info/2025/06/18/funky-chunks.html * https://w4ke.info/2025/10/29/funky-chunks-2.html Jetty terminates chunk extension parsing at \r\n inside quoted strings instead of treating this as an error. POST / HTTP/1.1 Host: localhost Transfer-Encoding: chunked 1;ext="val X 0 GET /smuggled HTTP/1.1 ... Note how the chunk extension does not close the double quotes, and it is able to inject a smuggled request.

CVE-2026-29145

Critical

2026-04-09

No exploit published

No public exploit

CLIENT_CERT authentication does not fail as expected for some scenarios when soft fail is disabled vulnerability in Apache Tomcat, Apache Tomcat Native. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.18, from 10.1.0-M7 through 10.1.52, from 9.0.83 through 9.0.115; Apache Tomcat Native: from 1.1.23 through 1.1.34, from 1.2.0 through 1.2.39, from 1.3.0 through 1.3.6, from 2.0.0 through 2.0.13. Users are recommended to upgrade to version Tomcat Native 1.3.7 or 2.0.14 and Tomcat 11.0.20, 10.1.53 and 9.0.116, which fix the issue.