What is CVE-2025-64131?

CVE-2025-64131 is a high-severity vulnerability in Jenkins Saml, classified under Authentication Bypass by Capture-replay. CVSS score: 7.5/10. Published 2025-10-29.

How severe is CVE-2025-64131?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Jenkins Saml

CVE-2025-64131

Jenkins SAML Plugin 4.583.vc68232f7018a_ and earlier does not implement a replay cache, allowing attackers able to obtain information about the SAML authentication flow between a user's web browser and Jenkins to replay those requests, authenticating to Jenkins as that user.

Published 2025-10-29 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.005 (38.1th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 38th percentile — 38.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.005 · change: +0.000

Affected products

Jenkins Saml
Jenkins Project Saml Plugin — versions 0

Weakness classification (CWE)

CWE-294 — Authentication Bypass by Capture-replay

References

www.jenkins.io/security/advisory/2025-10-29/ (vendor-advisory, Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2025-64131?: CVE-2025-64131 is a high-severity vulnerability in Jenkins Saml, classified under Authentication Bypass by Capture-replay. CVSS score: 7.5/10. Published 2025-10-29.
How severe is CVE-2025-64131?: High severity. CVSS v3 base score is 7.5 out of 10.