Apache Tomcat Missing Encryption via EncryptInterceptor Bypass Fixed in 9.0.117
CVE-2026-34486 Published on April 9, 2026

Apache Tomcat: Fix for CVE-2026-29146 allowed bypass of EncryptInterceptor
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.

Vendor Advisory NVD

Vulnerability Analysis

CVE-2026-34486 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality, with no impact on integrity and availability.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
NONE
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
NONE
Availability Impact:
NONE

Weakness Types

Missing Encryption of Sensitive Data

The software does not encrypt sensitive or critical information before storage or transmission. The lack of proper data encryption passes up the guarantees of confidentiality, integrity, and accountability that properly implemented encryption conveys.

Reliance on Untrusted Inputs in a Security Decision

The application uses a protection mechanism that relies on the existence or values of an input, but the input can be modified by an untrusted actor in a way that bypasses the protection mechanism.


Products Associated with CVE-2026-34486

You can be notified by email with stack.watch whenever vulnerabilities like CVE-2026-34486 are published in these products:

Apache Tomcat
 
F5 Networks Tomcat
 
Red Hat Enterprise Linux (RHEL)
 
Red Hat Jboss Enterprise Web Server
 

Affected Versions

Apache Software Foundation Apache Tomcat: Red Hat Enterprise Linux 10: Red Hat Enterprise Linux 6: Red Hat Enterprise Linux 7: Red Hat Enterprise Linux 8: Red Hat Enterprise Linux 9: Red Hat JBoss Web Server 5: Red Hat JBoss Web Server 6:

Exploit Probability

EPSS
1.90%
Percentile
76.93%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.