Red Hat

CVE-2026-103314: A flaw was found in Red Hat Advanced Cluster Security for Kubernetes (RHACS). The Central SAML authentication ACS endpoint does not retain used SAML assertion o

CVE-2026-103314 Oct 19, 2026 Source: Vendor

A flaw was found in Red Hat Advanced Cluster Security for Kubernetes (RHACS). The Central SAML authentication ACS endpoint does not retain used SAML assertion or response identifiers to prevent replay. An attacker who obtains a valid, unexpired signed SAML response can submit it multiple times and receive distinct Central authentication tokens for the mapped identity.

Source of record The credited names below are quoted verbatim from the vendor's own advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-103314

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CVE-2026-103314 BR2026-0000-027614 unclaimed

Credited as Red Hat would like to thank Austin Chu (U.C. Berkeley), Corban Villa (U.C. Berkeley), and Sohee Kim (U.C. Berkeley) for reporting this issue