Bug 2508296 (CVE-2026-33930) - CVE-2026-33930 Apache Traffic Server: Apache Traffic Server: Denial of Service via over-long Host header
Summary: CVE-2026-33930 Apache Traffic Server: Apache Traffic Server: Denial of Servic...
Keywords:
Status: NEW
Alias: CVE-2026-33930
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
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Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-07-29 08:01 UTC by OSIDB Bzimport
Modified: 2026-07-29 12:29 UTC (History)
0 users

Fixed In Version:
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Description OSIDB Bzimport 2026-07-29 08:01:34 UTC 
Apache Traffic Server copies the client Host header into a fixed-size stack buffer without a bound during redirect handling, so an over-long Host header overflows the stack when redirect following is enabled.

This issue affects Apache Traffic Server: from 8.0.0 through 8.1.9, from 9.0.0 through 9.2.14, from 10.0.0 through 10.1.3.

Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fix the issue.
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