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.
Metrics
Affected Vendors & Products
References
History
Fri, 23 Oct 2026 22:30:00 +0000
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ssvc
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Thu, 22 Oct 2026 10:45:00 +0000
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| First Time appeared |
Apache
Apache apache Traffic Server Apache traffic Server Apache Software Foundation Apache Software Foundation apache Traffic Server |
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Apache
Apache apache Traffic Server Apache traffic Server Apache Software Foundation Apache Software Foundation apache Traffic Server |
Wed, 21 Oct 2026 19:30:00 +0000
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| Description | 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. | |
| Title | Apache Traffic Server: Dropping chunked trailers stalls a passthrough transfer until timeout | |
| Weaknesses | CWE-400 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: apache
Published: 2026-10-21T19:20:00.515Z
Updated: 2026-10-23T21:21:06.850Z
Reserved: 2026-10-16T20:29:16.510Z
Link: CVE-2026-111817
Updated: 2026-10-23T20:52:20.721Z
Status : Awaiting Analysis
Published: 2026-10-21T20:17:23.467
Modified: 2026-10-23T22:16:56.030
Link: CVE-2026-111817
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