CVE-2026-15154

MEDIUM 6.5

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

CVSS Score

6.5

EPSS Score

0.5%

EPSS Percentile

38th

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.

CWE	CWE-1333
Published	Jul 8, 2026
Last Updated	Sep 30, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

Adjacent

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Affected Versions

Red Hat / Red Hat OpenShift AI 2.25

All versions affected

Red Hat / Red Hat OpenShift AI 2.25

All versions affected

Red Hat / Red Hat OpenShift AI 3.3

All versions affected

Red Hat / Red Hat OpenShift AI 3.3

All versions affected

Red Hat / Red Hat OpenShift AI 3.4

All versions affected

Red Hat / Red Hat OpenShift AI 3.4

All versions affected

References

NVD ↗ CVE.org ↗ EPSS Data ↗