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

What is CVE-2024-21733?

CVE-2024-21733 is a medium-severity vulnerability in Apache Tomcat, published on 19 Jan 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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.

Weakness: CWE-209

Which versions are affected by CVE-2024-21733?

11 open source packages ship an affected version, including org.apache.tomcat.embed:tomcat-embed-core, tomcat and org.apache.tomcat.experimental:tomcat-embed-programmatic. It affects 1 product.

Products include Apache Tomcat.

How do I fix CVE-2024-21733?

Upgrade org.apache.tomcat.embed:tomcat-embed-core to a fixed version for your release line: 8.5.64 or 9.0.44.

Is CVE-2024-21733 being exploited?

There is no known exploitation of CVE-2024-21733 in the wild and no public exploit code.

Public exploit code: 1 proofs of concept on GitHub.

Other vulnerabilities in Apache Tomcat

• CVE-2025-24813 Apache Tomcat Path Equivalence Exploited Critical 10.0
• CVE-2016-8735 Apache Tomcat Remote Code Execution Exploited Critical 9.8
• CVE-2017-12617 Apache Tomcat Remote Code Execution Exploited High 8.1
• CVE-2017-12615 Apache Tomcat on Windows Remote Code Execution Exploited High 8.1
• CVE-2026-34486 Apache Tomcat Missing Encryption of Sensitive Data Exploited High 7.5

All Apache Tomcat vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BIT-tomcat-2024-21733, DEBIAN-CVE-2024-21733, GHSA-f4qf-m5gf-8jm8, OESA-2024-1107, SUSE-SU-2024:0829-1, UBUNTU-CVE-2024-21733.