---
id: CVE-2026-15154
title: >-
  A flaw was found in `guardrails-detectors`, a component of Red Hat OpenShift
  AI
summary: >-
  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 …
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-1333
vendor: redhat
product: openshift_ai
affected:
  - openshift_ai
published: '2026-07-08'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T23:17:21.743'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-15154'
references:
  - url: 'https://access.redhat.com/errata/RHSA-2026:53261'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:53262'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:53263'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:60520'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:65126'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/security/cve/CVE-2026-15154'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2498188'
    label: secalert@redhat.com
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-15154.json
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-15154'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-15154'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-07-08T20:38:40.332330Z'
epss: 0.00465
epssPercentile: 0.37531
ingestedAt: '2026-09-08T23:13:54.647Z'
patched:
  - openshift_ai 2.25
  - openshift_ai 3.3
  - openshift_ai 3.4
---

## Overview

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

- `openshift_ai`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Vendor advisories

- **RHSA-2026:65126** · Red Hat · fixed in: Red Hat OpenShift AI 2.25 · released 2026-09-08 · [advisory](https://access.redhat.com/errata/RHSA-2026:65126)
- **RHSA-2026:53261** · Red Hat · fixed in: Red Hat OpenShift AI 2.25 · released 2026-08-11 · [advisory](https://access.redhat.com/errata/RHSA-2026:53261)
- **RHSA-2026:53263** · Red Hat · fixed in: Red Hat OpenShift AI 3.3 · released 2026-08-11 · [advisory](https://access.redhat.com/errata/RHSA-2026:53263)
- **RHSA-2026:60520** · Red Hat · fixed in: Red Hat OpenShift AI 3.4 · released 2026-08-27 · [advisory](https://access.redhat.com/errata/RHSA-2026:60520)
- **RHSA-2026:53262** · Red Hat · fixed in: Red Hat OpenShift AI 3.4 · released 2026-08-11 · [advisory](https://access.redhat.com/errata/RHSA-2026:53262)