Apache Traffic Server 9.x/10.x Improper Access Control <9.1.15 /10.1.4
CVE-2026-41920 Published on July 29, 2026
Apache Traffic Server: SNI to Host header matching policy is not properly enforced
Improper Access Control vulnerability in Apache Traffic Server.
This issue affects Apache Traffic Server: from 9.0.0 through 9.1.14, from 10.0.0 through 10.1.3.
Users are recommended to upgrade to version 9.1.15 or 10.1.4, which fixes the issue.
Vulnerability Analysis
CVE-2026-41920 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality, a high impact on integrity, and no impact on availability.
Weakness Type
What is an Authorization Vulnerability?
The software does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
CVE-2026-41920 has been classified to as an Authorization vulnerability or weakness.
Products Associated with CVE-2026-41920
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Affected Versions
Apache Software Foundation Apache Traffic Server:- Version 9.0.0, <= 9.1.14 is affected.
- Version 10.0.0, <= 10.1.3 is affected.