Bug 2558490 (CVE-2026-111814) - CVE-2026-111814 trafficserver: Apache Traffic Server: Default server_session_sharing.match omits MASK_CERT, allowing pooled mTLS identity confusion at the origin
Summary: CVE-2026-111814 trafficserver: Apache Traffic Server: Default server_session_...
Keywords:
Status: NEW
Alias: CVE-2026-111814
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
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Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-10-21 19:21 UTC by OSIDB Bzimport
Modified: 2026-11-01 21:04 UTC (History)
0 users

Fixed In Version:
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Description OSIDB Bzimport 2026-10-21 19:21:51 UTC 
Apache Traffic Server's default outbound session-sharing policy can reuse a pooled TLS session authenticated with one client certificate for a transaction configured to present a different one.



This issue affects Apache Traffic Server: from 9.0.0 through 9.2.15, from 10.0.0 through 10.1.4, 10.2.0.



Users are recommended to upgrade to version 9.2.16, 10.1.5, or 10.2.1, which fix the issue.
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