CVE-2026-111814
Apache Traffic Server: Default server_session_sharing.match omits MASK_CERT, allowing pooled mTLS identity confusion at the origin
CVSS Score
10.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-295 |
| Vendor | apache software foundation |
| Product | apache traffic server |
| Published | Oct 21, 2026 |
Stay Ahead of the Next One
Get instant alerts for apache software foundation apache traffic server
Be the first to know when new critical vulnerabilities affecting apache software foundation apache traffic server are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
None
Affected Versions
Apache Software Foundation / Apache Traffic Server
9.0.0 ≤ 9.2.15 10.0.0 ≤ 10.1.4 10.2.0
References
Credits
🔍 Craig Taylor