CVE-2026-111815Critical· 10.0▾ MidnightApache Traffic Server can resume a TLS session across SNI virtual hosts without re-verifying a client certificate required by the resumed host's verify_client STRICT policy. This issue affects Apache Traffic Server: from 8.0.0 through…
▾ Midnight zone — Critical, or high with PoC / in-the-wild
impact 55 · likelihood 0 · exploitation 0
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Apache Traffic Server can resume a TLS session across SNI virtual hosts without re-verifying a client certificate required by the resumed host's verify_client STRICT policy.
This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, 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.
apache_traffic_server >= 8.0.0 <= 8.1.11apache_traffic_server >= 9.0.0 <= 9.2.15apache_traffic_server >= 10.0.0 <= 10.1.4apache_traffic_server 10.2.0Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-111814Critical· 10.0Apache Traffic Server: Default server_session_sharing.match omits MASK_CERT, allowing pooled mTLS identity confusion at the origin
CVE-2026-111805High· 8.6Apache Traffic Server: HTTP/2 Content-Length truncation lets a client trigger backend worker-pool exhaustion
CVE-2026-111808High· 8.6Apache Traffic Server: HTTP/2 DATA frame padding underflow lets a client trigger backend worker-pool exhaustion
CVE-2026-111810High· 7.5Apache Traffic Server: Unthrottled per-header diagnostic logging enables a log-flood denial of service
CVE-2026-111809Critical· 9.3Apache Traffic Server: HEAD requests carrying Content-Length or Transfer-Encoding enable request smuggling
CVE-2026-111812Critical· 10.0Apache Traffic Server: origin_server_auth signs client-controlled AWS headers under the proxy's IAM credentials