What’s Vulnerable › Vulnerabilities

CVE-2026-19278: Stackrox: stackrox: privilege escalation via unanchored regular expressions in auth m2m role mappings

• Severity: medium (CVSS 6.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-10 · updated 2026-10-23
• Weakness: CWE-625

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.

Affected products

• Red Hat Advanced Cluster Security 4: all versions

References

• https://access.redhat.com/security/cve/CVE-2026-19278
• https://bugzilla.redhat.com/show_bug.cgi?id=2512524

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