CVE-2026-15154

MEDIUM

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

Title source: cna

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.

References (2)

Core 2

Core References

Vdb Entry, X_Refsource_Redhat vdb-entry x_refsource_redhat

https://access.redhat.com/security/cve/CVE-2026-15154

Issue Tracking, X_Refsource_Redhat issue-tracking x_refsource_redhat

RHBZ#2498188

https://bugzilla.redhat.com/show_bug.cgi?id=2498188

Scores

CVSS v3 6.5

EPSS 0.0020

EPSS Percentile 10.4%

Attack Vector ADJACENT_NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-1333

Status published

Products (2)

Red Hat/Red Hat OpenShift AI (RHOAI)

redhat/openshift_ai

Published Jul 08, 2026

Tracked Since Jul 09, 2026