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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

Protected by Waratek, exploitedProtected by Waratek, exploitedProtected by WaratekMitigation candidate, exploitedMitigation candidateMitigation candidateNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNo exploit publishedNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicableNot applicable
Share this chart Oracle Critical Security Patch Update May 2026, one square per CVE: 37 Java CVEs, 3 protected by Waratek, 3 exploited, 37 other CVEs in this release.

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3Protected by Waratek3Mitigation candidate31No exploit published37Not 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.

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Columns
Has a public PoC✕
Overview 2 matches · 1 protected · 1 CISA KEV · 1 EPSS ≥ 0.5
2matches 1protected50.0% 1CISA KEV50.0% 1EPSS ≥ 0.550.0%
Protected by Waratek 1 50.0% Rule in development 0 0.0% Mitigation candidate 1 50.0% No exploit published 0 0.0%
Critical 0 0.0% High 2 100.0% Medium 0 0.0% Low 0 0.0% None 0 0.0% Unknown 0 0.0%
blocked by ARMR today 1 50.0% partly blocked 0 0.0% not blocked 1 50.0% not established 0 0.0% unrecorded 0 0.0%
Exploited 2 100.0% Working exploit published 0 0.0% Proof of concept only 0 0.0% Forecast only 0 0.0% No public exploit 0 0.0%
split by peak 2 / month
Mitigation candidate: 1Protected by Waratek: 1 High: 2 not blocked: 1blocked by ARMR today: 1 Exploited: 2
Apr 262 Protected by Waratek1 Mitigation candidate1 High2 blocked by ARMR today1 not blocked1 Exploited2
Apr 26
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CVE Severity Published▾ Status Exploitation Description
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-2026-34486 High 2026-04-09 Protected by Waratek Exploited Missing Encryption of Sensitive Data vulnerability in Apache Tomcat due to the fix for CVE-2026-29146 allowing the bypass of the EncryptInterceptor. This issue affects Apache Tomcat: 11.0.20, 10.1.53, 9.0.116. Users are recommended to upgrade to version 11.0.21, 10.1.54 or 9.0.117, which fix the issue.