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CVE-2026-34483

nvd nist
Published: Apr 9, 2026Modified: Jun 17, 2026

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7.5
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Exploitability: 3.9 / Impact: 3.6
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

Description

Improper Encoding or Escaping of Output vulnerability in the JsonAccessLogValve component of Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.20, from 10.1.0-M1 through 10.1.53, from 9.0.40 through 9.0.116. Users are recommended to upgrade to version 11.0.21, 10.1.54 or 9.0.117 , which fix the issue.

Affected (3)

Products: Apache: Tomcat
Apache
1 product
Tomcat
Configuration A
3 vulnerable
Vulnerable SoftwareAffected Versions
Apache
Tomcat
From 10.1.0 to 10.1.54
Tomcat
From 11.0.0 to 11.0.21
Tomcat
From 9.0.40 to 9.0.117

Related CWEs

CWE-116
Improper Encoding or Escaping of Output
The product prepares a structured message for communication with another component, but encoding or escaping of the data is either missing or done incorrectly. As a result, the intended structure of the message is not preserved.

References (2)

Source: security@apache.org
Mailing ListVendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing ListThird Party Advisory

Timeline

No history available yet.