CVE-2026-19278
Stackrox: stackrox: privilege escalation via unanchored regular expressions in auth m2m role mappings
CVSS Score
6.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-625 |
| Vendor | red hat |
| Product | red hat advanced cluster security 4 |
| Published | Aug 10, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None
Affected Versions
Red Hat / Red Hat Advanced Cluster Security 4
All versions affected References
Credits
Red Hat would like to thank Sergey Kanibor (r0binak) for reporting this issue.