CVE-2026-15154mediumCWE-1333

CVE-2026-15154: medium-severity vulnerability in guardrails-detectors

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

Published · Updated

Follow this CVE+ Monitor Red Hat OpenShift AI+ Monitor guardrails-detectors

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 6.5epss 0.5%
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.
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
guardrails-detectorsRed Hat · Red Hat OpenShift AI 2.25Red Hat · Red Hat OpenShift AI 3.3Red Hat · Red Hat OpenShift AI 3.4
Related CVEs — guardrails-detectors

In the same product, most dangerous first.

CVE-2026-18948CRITICALFeast: feast: unsafe dill deserialization of registry-stored udfs — rce on feature server and registry serverEPSS 1.1%CVE-2026-18951HIGHOdh-training-operator-rhel9: [trainer v2 security] trn-02: rhoai overlay aggregates trainjobs crud into standard edit clusterroleEPSS 0.9%CVE-2026-18941HIGHFeast: feast-operator: feast: default authentication mode is no_auth — shared multi-tenant instances deployed without authenticationEPSS 0.9%CVE-2026-56211HIGHLibaom: libaom: remote code execution via svc layer context handling with attacker-controlled framesEPSS 0.9%CVE-2026-18618HIGHMl-metdata: bundled grpc 1.46.3 (2022) with published http/2 dos cves — directly reachable on listenerEPSS 0.8%CVE-2026-18982HIGHOdh-training-operator-rhel9: rhoai fork aggregates training job create onto native edit/admin clusterrolesEPSS 0.8%