Bug 2539370 (CVE-2026-86350) - CVE-2026-86350 tomcat: Apache Tomcat: HTTP/2 request smuggling due to header mix-up
Summary: CVE-2026-86350 tomcat: Apache Tomcat: HTTP/2 request smuggling due to header ...
Keywords:
Status: NEW
Alias: CVE-2026-86350
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2543044
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-23 11:51 UTC by OSIDB Bzimport
Modified: 2026-09-29 10:06 UTC (History)
10 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-09-23 11:51:25 UTC 
Inconsistent interpretation of HTTP/2 requests ('HTTP Request/Response smuggling') vulnerability in Apache Tomcat caused by a regression in fix for CVE-2026-41293 can trigger request header mix-up.



This issue affects Apache Tomcat: from 11.0.22 through 11.0.25, from 10.1.55 through 10.1.59, from 9.0.118 through 9.0.121.



Users are recommended to upgrade to version 11.0.26, 10.1.60 or 9.0.122, which fix the issue.
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