Privilege Escalation Vulnerability in StackRox/RHACS Central by Red Hat
CVE-2026-19278

6.8MEDIUM

Key Information:

Vendor

Red Hat
Status
Red Hat Advanced Cluster Security 4
Vendor
CVE Published:
10 August 2026

What is CVE-2026-19278?

A vulnerability exists in the StackRox/RHACS Central's Auth Machine-to-Machine (M2M) token exchange mechanism. This issue arises when administrators configure role mappings, causing the system to utilize unanchored regular expressions for validating claim values. As a result, an attacker possessing a valid OpenID Connect (OIDC) token can exploit the flaw by presenting a claim value that acts as a superstring of a configured pattern, leading to unauthorized role access. This issue poses a significant risk of privilege escalation, enabling attackers to gain elevated privileges within the system.

References

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

CVSS V3.1

Score:
6.8
Severity:
MEDIUM
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Red Hat would like to thank Sergey Kanibor (r0binak) for reporting this issue.
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