CVE-2026-34483
CVE-2026-34483 · Apache Tomcat: Incomplete escaping of JSON access logs
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
CVSS 7.5 · High · EPSS 0.5% · Fix available
- Published
- Updated
Stack: system
Affected products and versions
apache tomcat
- Versions
- ≥ 11.0.0-M1, ≤ 11.0.20: Affected (semver)
- ≥ 10.1.0-M1, ≤ 10.1.53: Affected (semver)
- ≥ 9.0.40, ≤ 9.0.116: Affected (semver)
- ≥ 8.5.84, ≤ 8.5.100: Affected (semver)
- ≥ 0, ≤ 8.5.83: Not affected (semver)
No fix published
tomcat10 Debian:12
- Versions
- 10.1.10-1
- 10.1.13-1
- 10.1.14-1
- 10.1.15-1
- 10.1.16-1
- 10.1.20-1
- 10.1.23-1
- 10.1.25-1
- 10.1.25-1~bpo12+1
- 10.1.25-2
- 10.1.30-1
- 10.1.30-1~bpo12+1
- 10.1.31-1
- 10.1.33-1
- 10.1.33-1~bpo12+1
- 10.1.34-0+deb12u1
- 10.1.34-0+deb12u2
- 10.1.34-1
- 10.1.35-1
- 10.1.40-1
- 10.1.40-1~bpo12+1
- 10.1.46-1
- 10.1.52-1
- 10.1.52-1~deb12u1
- 10.1.52-1~deb13u1
- 10.1.52-2
- 10.1.54-1
- 10.1.6-1
- 10.1.6-1+deb12u1
- 10.1.6-1+deb12u2
- 10.1.7-1
- 10.1.8-1
- 10.1.9-1
- Affected ranges
- ECOSYSTEM: < 10.1.55-1~deb12u1
Update to 10.1.55-1~deb12u1
tomcat10 Debian:13
- Versions
- 10.1.40-1
- 10.1.46-1
- 10.1.52-1
- 10.1.52-1~deb12u1
- 10.1.52-1~deb13u1
- 10.1.52-2
- 10.1.54-1
- 10.1.55-1~deb12u1
- Affected ranges
- ECOSYSTEM: < 10.1.55-1~deb13u1
Update to 10.1.55-1~deb13u1
tomcat10 Debian:14
- Versions
- 10.1.40-1
- 10.1.46-1
- 10.1.52-1
- 10.1.52-1~deb12u1
- 10.1.52-1~deb13u1
- 10.1.52-2
- Affected ranges
- ECOSYSTEM: < 10.1.54-1
Update to 10.1.54-1
tomcat11 Debian:13
- Versions
- 11.0.11-1
- 11.0.15-1
- 11.0.15-1~deb13u1
- 11.0.18-1
- 11.0.21-1
- 11.0.6-1
- Affected ranges
- ECOSYSTEM: < 11.0.22-1~deb13u1
Update to 11.0.22-1~deb13u1
tomcat11 Debian:14
- Versions
- 11.0.11-1
- 11.0.15-1
- 11.0.15-1~deb13u1
- 11.0.18-1
- 11.0.6-1
- Affected ranges
- ECOSYSTEM: < 11.0.21-1
Update to 11.0.21-1
tomcat9 Debian:12
- Affected ranges
- ECOSYSTEM: < 9.0.70-2
Update to 9.0.70-2
tomcat9 Debian:13
- Affected ranges
- ECOSYSTEM: < 9.0.70-2
Update to 9.0.70-2
tomcat9 Debian:14
- Affected ranges
- ECOSYSTEM: < 9.0.70-2
Update to 9.0.70-2
tomcat10 Ubuntu:24.04:LTS
- Versions
- 10.1.10-1
- 10.1.14-1
- 10.1.15-1
- 10.1.16-1
- 10.1.16-1ubuntu0.1~esm1
- 10.1.16-1ubuntu0.1~esm2
- 10.1.16-1ubuntu0.1~esm3
- 10.1.16-1ubuntu0.1~esm4
- 10.1.55-1ubuntu2~24.04.1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
tomcat10 Ubuntu:25.10
- Versions
- 10.1.35-1
- 10.1.40-1
- 10.1.40-1ubuntu1
- 10.1.40-1ubuntu1.25.10.1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
tomcat11 Ubuntu:25.10
- Versions
- 11.0.6-1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
tomcat9 Ubuntu:25.10
- Versions
- 9.0.70-2ubuntu1.1
- 9.0.70-2ubuntu2
- 9.0.70-2ubuntu3
- 9.0.95-1ubuntu1
- 9.0.95-1ubuntu1.1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
tomcat10 Ubuntu:26.04:LTS
- Versions
- 10.1.40-1ubuntu1
- 10.1.40-1ubuntu1.26.04.1
- 10.1.55-1ubuntu2~26.04.1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
tomcat9 Ubuntu:26.04:LTS
- Versions
- 9.0.95-1ubuntu1
- 9.0.111-1
- 9.0.115-1
- 9.0.115-1ubuntu0.1
- 9.0.118-1~26.04.1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
tomcat11 Ubuntu:26.04:LTS
- Versions
- 11.0.6-1
- 11.0.11-1
- 11.0.15-1
- 11.0.18-1
- 11.0.18-1ubuntu0.1~esm1
- 11.0.22-2ubuntu2~26.04.1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published