A flaw was found in StackRox/RHACS Central's Auth Machine-to-Machine (M2M) token exchange. When an administrator configures M2M role mappings, the system uses unanchored regular expressions for matching claim values. This allows an attacker with a valid OpenID Connect (OIDC) token, whose claim value is a superstring of a configured pattern, to gain unauthorized access to roles they were not intended to receive. This can lead to privilege escalation within the system.
History

Tue, 11 Aug 2026 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Moderate


Mon, 10 Aug 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Mon, 10 Aug 2026 12:30:00 +0000

Type Values Removed Values Added
Description A flaw was found in StackRox/RHACS Central's Auth Machine-to-Machine (M2M) token exchange. When an administrator configures M2M role mappings, the system uses unanchored regular expressions for matching claim values. This allows an attacker with a valid OpenID Connect (OIDC) token, whose claim value is a superstring of a configured pattern, to gain unauthorized access to roles they were not intended to receive. This can lead to privilege escalation within the system.
Title Stackrox: stackrox: privilege escalation via unanchored regular expressions in auth m2m role mappings
First Time appeared Redhat
Redhat advanced Cluster Security
Weaknesses CWE-625
CPEs cpe:/a:redhat:advanced_cluster_security:4
Vendors & Products Redhat
Redhat advanced Cluster Security
References
Metrics cvssV3_1

{'score': 6.8, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published: 2026-08-10T12:13:40.169Z

Updated: 2026-08-11T06:25:18.312Z

Reserved: 2026-08-07T15:16:51.217Z

Link: CVE-2026-19278

cve-icon Vulnrichment

Updated: 2026-08-10T18:09:13.914Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-08-10T13:17:58.797

Modified: 2026-08-14T19:07:46.080

Link: CVE-2026-19278

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-08-07T09:41:42Z

Links: CVE-2026-19278 - Bugzilla