What’s Vulnerable › Vulnerabilities

CVE-2024-21733: Apache Tomcat: Leaking of unrelated request bodies in default error page

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 14.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-01-19 · updated 2026-06-17
• Weakness: CWE-209

Description

Generation of Error Message Containing Sensitive Information vulnerability in Apache Tomcat.This issue affects Apache Tomcat: from 8.5.7 through 8.5.63, from 9.0.0-M11 through 9.0.43. Other, EOL versions may also be affected. Users are recommended to upgrade to version 8.5.64 onwards or 9.0.44 onwards, which contain a fix for the issue.

Affected products

• Apache Tomcat: from 8.5.7 before 8.5.64; from 9.0.1 before 9.0.44; 9.0.0-milestone11, 9.0.0-milestone12, 9.0.0-milestone13, 9.0.0-milestone14, 9.0.0-milestone15, 9.0.0-milestone16 (+11) — fixed in 8.5.64, 9.0.44

How to fix

Upgrade to a fixed version: Apache Tomcat 8.5.64, 9.0.44. Check the vendor advisory for mitigations.

References

• https://lists.apache.org/thread/h9bjqdd0odj6lhs2o96qgowcc6hb0cfz
• http://packetstormsecurity.com/files/176951/Apache-Tomcat-8.5.63-9.0.43-HTTP-Response-Smuggling.html
• http://www.openwall.com/lists/oss-security/2024/01/19/2
• https://lists.apache.org/thread/h9bjqdd0odj6lhs2o96qgowcc6hb0cfz
• https://lists.debian.org/debian-lts-announce/2025/01/msg00009.html
• https://security.netapp.com/advisory/ntap-20240216-0005/

Get alerted when CVE-2024-21733 or the next vulnerability affects your stack