Red HatCVE-2026-19278
Red Hat Advanced Cluster Security 4: privilege escalation
Medium6.8CVE-2026-19278 · Published Aug 10, 2026 · updated Aug 14, 2026
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 versions
| Package | Affected | Fixed in |
|---|---|---|
| Red Hat Advanced Cluster Security 4 Product | all versions | No fix yet |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-625
More Red Hat advisories
All Red Hat| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Aug 10 | Red Hat QEMU: memory corruption | Medium4.4 | No fix yet |
| Aug 10 | Red Hat Enterprise Linux: denial of service | Low3.9 | No fix yet |
| Aug 10 | Red Hat Enterprise Linux 10: privilege escalation | High7.8 | No fix yet |
| Aug 10 | Red Hat OpenShift AI (RHOAI): denial of service | High8.5 | No fix yet |
| Aug 10 | Red Hat OpenShift AI (RHOAI): remote code execution | Critical9.9 | No fix yet |
| Aug 10 | Red Hat OpenShift AI (RHOAI): privilege escalation | High8.8 | No fix yet |