PT-2026-31712 · Apache+1 · Apache Tomcat+1

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CVE-2026-34486

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Published

2026-04-02

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Updated

2026-07-27

CVSS v2.0

7.8

High

VectorAV:N/AC:L/Au:N/C:C/I:N/A:N
Name of the Vulnerable Software and Affected Versions Apache Tomcat version 11.0.20 Apache Tomcat version 10.1.53 Apache Tomcat version 9.0.116
Description A flaw exists where the EncryptInterceptor, a component designed to ensure data encryption, can be bypassed. This issue was introduced as a result of a fix for a previous vulnerability. The bypass allows sensitive data to remain unencrypted, which may lead to unauthorized access to protected information or information disclosure. In the context of Tribes clustering, the EncryptInterceptor incorrectly forwards failed decryption attempts to internal deserialization logic instead of dropping them, which could allow a remote attacker to trigger arbitrary code execution if they can reach the Tribes receiver on TCP port 4000 and the target has usable gadget classes on the classpath.
Recommendations Upgrade Apache Tomcat version 11.0.20 to 11.0.21. Upgrade Apache Tomcat version 10.1.53 to 10.1.54. Upgrade Apache Tomcat version 9.0.116 to 9.0.117.

Exploit

Fix

RCE

Missing Encryption of Sensitive Data

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Weakness Enumeration

Related Identifiers

ALSA-2026:36788
ALSA-2026:36790
ALSA-2026:36879
ALSA-2026:37137
BDU:2026-05544
BIT-TOMCAT-2026-34486
CVE-2026-34486
GHSA-69R9-QGR7-G2WJ
MGASA-2026-0095
OESA-2026-1970
OPENSUSE-SU-2026:10547-1
OPENSUSE-SU-2026:10548-1
OPENSUSE-SU-2026:10549-1
OPENSUSE-SU-2026:20595-1
OPENSUSE-SU-2026:20611-1
OPENSUSE-SU-2026:20612-1
SUSE-SU-2026:1558-1
SUSE-SU-2026:1572-1
SUSE-SU-2026:1603-1
SUSE-SU-2026:1604-1
SUSE-SU-2026:21366-1
SUSE-SU-2026:21378-1
SUSE-SU-2026:21379-1

Affected Products

Apache Tomcat
Rocky Linux