CVE-2026-41920
CRITICALApache Traffic Server: SNI to Host header matching policy is not properly enforced
Title source: cnaDescription
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.
References (1)
Core 1
Core References
Vendor Advisory vendor-advisory
https://lists.apache.org/thread/5prl9glcm9g2swnq9hqxvnokylm1gr6d
Scores
CVSS v3
9.3
EPSS
0.0019
EPSS Percentile
8.6%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-284
Status
published
Products (2)
Apache Software Foundation/Apache Traffic Server
10.0.0 - 10.1.3
Apache Software Foundation/Apache Traffic Server
9.0.0 - 9.1.14
Published
Jul 29, 2026
Tracked Since
Jul 29, 2026