Paper/Archive/CVE-2026-111814

CVE-2026-111814

Apache Software Foundation Apache Traffic Server — Apache Traffic Server: Default server_session_sharing.match omits MASK_CERT, allowing pooled mTLS identity confusion at the origin

EPSS 0.2%CVSS 10.0

critical.is priorityof 100

CVSS 10.0 (CNA)10.0 / 10 × 3030.0 Not in CISA KEV+300.0 EPSS percentile 14.5.145 × 202.9 No public exploit+100.0 SSVC exploitation: none+100.0

Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource

Apache Traffic Server9.0.0 – 9.2.15–CNA

Apache Traffic Server10.0.0 – 10.1.4–CNA

Apache Traffic Server10.2.0–CNA

Scores by source

apache (CNA)10.0CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

apache (CNA)7.8CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:H/SI:H/SA:N

CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

advisorylists.apache.org/thread/r95dq29ywcd1f4x30snxlqmb12z4s4kc