Medium severity · published Jul 8, 2026
CVE-2026-15154
Guardrails-detectors: guardrails-detectors: unauthenticated regular-expression denial of service (redos) via detector_params.regex
6.5
CVSS
0.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Adjacent
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 41% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RH
Red Hat OpenShift AI 2.25 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat OpenShift AI 3.3 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat OpenShift AI 3.4 · Red Hat
All versions, or not specified · source: vendor
OA
Openshift AI · Redhat
All versions, or not specified · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-15154
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-15154
vendor-advisory
https://access.redhat.com/errata/RHSA-2026:53261
vendor-advisory
https://access.redhat.com/errata/RHSA-2026:53262
vendor-advisory
https://access.redhat.com/errata/RHSA-2026:53263
vendor-advisory
https://access.redhat.com/errata/RHSA-2026:60520
vendor-advisory
https://access.redhat.com/errata/RHSA-2026:65126
vendor-advisory
https://access.redhat.com/errata/RHSA-2026:73987
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