CVE-2023-42795
Apache Tomcat: Failure during request clean-up leads to sensitive data leaking to subsequent requests
MEDIUM 5.3EPSS 2.5%
Incomplete Cleanup vulnerability in Apache Tomcat.When recycling various internal objects in Apache Tomcat from 11.0.0-M1 through 11.0.0-M11, from 10.1.0-M1 through 10.1.13, from 9.0.0-M1 through 9.0.80 and from 8.5.0 through 8.5.93, an error could cause Tomcat to skip some parts of the recycling process leading to information leaking from the current request/response to the next.Older, EOL versions may also be affected.Users are recommended to upgrade to version 11.0.0-M12 onwards, 10.1.14 onwards, 9.0.81 onwards or 8.5.94 onwards, which fixes the issue.
- Affected
- Apache Software Foundation · Apache Tomcat
- CVSS v3.1 NVD
- 5.3 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - EPSS
- 2.51% chance of exploitation in the next 30 days, 85th percentile
- Published
- 2023-10-10
- Updated
- 2025-10-29
Proof-of-concept exploits (1)
- ckiellandpanw/brokenbank0★ · 2026-10-05
Security advisories
- https://lists.apache.org/thread/065jfyo583490r9j2v73nhpyxdob56lw
- http://www.openwall.com/lists/oss-security/2023/10/10/9
- https://lists.debian.org/debian-lts-announce/2023/10/msg00020.html
- https://www.debian.org/security/2023/dsa-5521
- https://www.debian.org/security/2023/dsa-5522
- advisories/GHSA-g8pj-r55q-5c2v