Bug 2558505 (CVE-2026-111817) - CVE-2026-111817 trafficserver: trafficserver: Denial of Service via dropped chunked trailers
Summary: CVE-2026-111817 trafficserver: trafficserver: Denial of Service via dropped c...
Keywords:
Status: NEW
Alias: CVE-2026-111817
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2562344 2562346
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-10-21 19:32 UTC by OSIDB Bzimport
Modified: 2026-10-27 19:30 UTC (History)
0 users

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-10-21 19:32:21 UTC 
Apache Traffic Server can stall a chunked transfer that it passes through with its trailers removed (proxy.config.http.drop_chunked_trailers) until the connection times out, because it waits for the trailer bytes it has already dropped. Trailer dropping is on by default in 10.x. In 8.1.11 and 9.2.x it is off by default, and those versions are affected only if it is enabled.



This issue affects Apache Traffic Server: 8.1.11, from 9.2.5 through 9.2.15, from 10.0.0 through 10.1.4, 10.2.0.



Users are recommended to upgrade to version 10.1.5 or 10.2.1, which fix the issue.
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