CVE-2026-103314
Stackrox: stackrox: saml response replay allows multiple central authentication tokens
CVSS Score
7.4
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-294 |
| Vendor | red hat |
| Product | red hat advanced cluster security 4 |
| Published | Oct 19, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None
Affected Versions
Red Hat / Red Hat Advanced Cluster Security 4
All versions affected Red Hat / Red Hat Advanced Cluster Security 4
All versions affected References
Credits
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.