What is CVE-2026-84668?

CVE-2026-84668 is a high-severity vulnerability in Jenkins Project Saml Plugin, classified under Improper Access Control. CVSS score: 8.8/10. Published 2026-09-02.

How severe is CVE-2026-84668?

High severity. CVSS v3 base score is 8.8 out of 10.

Vulnerability in Jenkins Project Saml Plugin

CVE-2026-84668

Jenkins SAML Plugin 4.618.v441a_27fa_46d2 and earlier allows overwriting the SAML identity provider metadata file through Stapler data binding, allowing attackers to replace it with attacker-controlled content and authenticate as any user.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Jenkins Project Saml Plugin

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

jenkinsci-cert@googlegroups.com (vendor-advisory)

Frequently asked questions

What is CVE-2026-84668?: CVE-2026-84668 is a high-severity vulnerability in Jenkins Project Saml Plugin, classified under Improper Access Control. CVSS score: 8.8/10. Published 2026-09-02.
How severe is CVE-2026-84668?: High severity. CVSS v3 base score is 8.8 out of 10.