CVE WatchOct 9, 2026

CVE-2013-4286

Apache Tomcat before 6.0.39, 7.x before 7.0.47, and 8.x before 8.0.0-RC3, when an HTTP connector or AJP connector is used, does not properly

CVSS

5.8

No CVSS

EPSS

16.2%

p97

KEV

—

Exploit Today

0-100

Published: Feb 26, 2014 · Last modified: Oct 9, 2026 · CWE-20

EPSS · 30d

16.2%EPSS · 30 days16.8%

2026-09-262026-10-23

Technical description

Apache Tomcat before 6.0.39, 7.x before 7.0.47, and 8.x before 8.0.0-RC3, when an HTTP connector or AJP connector is used, does not properly handle certain inconsistent HTTP request headers, which allows remote attackers to trigger incorrect identification of a request's length and conduct request-smuggling attacks via (1) multiple Content-Length headers or (2) a Content-Length header and a "Transfer-Encoding: chunked" header. NOTE: this vulnerability exists because of an incomplete fix for CVE-2005-2090.

Official references

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