What’s Vulnerable › Vulnerabilities

CVE-2026-15154: Guardrails-detectors: guardrails-detectors: unauthenticated regular-expression denial of service (redos) via detector_params.regex

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-08 · updated 2026-10-25
• Weakness: CWE-1333

Description

A flaw was found in `guardrails-detectors`, a component of Red Hat OpenShift AI. This vulnerability, known as Regular Expression Denial of Service (ReDoS), allows a remote attacker to provide specially crafted regular expressions to the public detection API. This can cause catastrophic backtracking, leading to a worker process consuming 100% CPU indefinitely and resulting in a denial of service for the entire guardrails-mediated LLM pipeline.

Affected products

• Red Hat OpenShift AI 2.25: all versions

References

• https://access.redhat.com/errata/RHSA-2026:53261
• https://access.redhat.com/errata/RHSA-2026:53262
• https://access.redhat.com/errata/RHSA-2026:53263
• https://access.redhat.com/errata/RHSA-2026:60520
• https://access.redhat.com/errata/RHSA-2026:65126
• https://access.redhat.com/errata/RHSA-2026:73987
• https://access.redhat.com/security/cve/CVE-2026-15154
• https://bugzilla.redhat.com/show_bug.cgi?id=2498188

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