Not rated
CVE-2026-34483 Improper Encoding or Escaping of Output vulnerability in the JsonAccessLogValve component of Apache Tomcat
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 products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Apache Tomcat 11.0 | 11.0.0-M1 → 11.0.20 | No fix stated |
| Apache Tomcat 10.1 | 10.1.0-M1 → 10.1.53 | No fix stated |
| Apache Tomcat 9.0 | 9.0.40 → 9.0.116 | No fix stated |
| Apache Tomcat 8.5 | 8.5.84 → 8.5.100 | No fix stated |
References
- lists.apache.org lists.apache.org
Timeline
- Published
- Last modified
Other CVEs of Apache Tomcat
The 141 CVEs of Apache Tomcat →
CVE-2026-103119
Buffer under-read vulnerability in Apache Tomcat meant that a large non-blocking write could result in the response body…
Not rated
CVE-2026-101356
Incorrect object recycling and re-use vulnerability in Apache Tomcat affecting HTTP/2 processing of asynchronous…
Not rated
CVE-2026-101296
A missing critical step in authentication vulnerability in Apache Tomcat when the JNDI realm was configured with with…
Not rated
CVE-2026-93446
Incomplete cleanup vulnerability in Apache Tomcat could cause TLS 1.3 connections to fail intermittently
Not rated