Description
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.
Published: 2026-10-19
Score: 7.4 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

Vendor Workaround

Until an update is available, restrict network access to the Central SAML ACS endpoint to trusted identity providers and networks, and reduce SAML assertion lifetimes at the identity provider where possible.

Tracking

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Advisories

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History

Mon, 19 Oct 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Mon, 19 Oct 2026 12:45:00 +0000

Type Values Removed Values Added
Description 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.
Title Stackrox: stackrox: saml response replay allows multiple central authentication tokens
First Time appeared Redhat
Redhat advanced Cluster Security
Weaknesses CWE-294
CPEs cpe:/a:redhat:advanced_cluster_security:4
Vendors & Products Redhat
Redhat advanced Cluster Security
References
Metrics cvssV3_1

{'score': 7.4, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N'}


Subscriptions

Redhat Advanced Cluster Security
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-10-19T15:06:23.293Z

Reserved: 2026-09-30T11:57:54.198Z

Link: CVE-2026-103314

cve-icon Vulnrichment

Updated: 2026-10-19T15:06:19.037Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-19T13:16:53.617

Modified: 2026-10-19T21:03:27.760

Link: CVE-2026-103314

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-19T15:00:16Z

Weaknesses
  • CWE-294

    Authentication Bypass by Capture-replay