Cross-site request forgery in Jenkins products - CVE-2026-84649
Published: September 4, 2026
Vulnerability identifier: #VU146901
CSH Severity: Low
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]
CVE-ID: CVE-2026-84649
CWE-ID: CWE-352
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform cross-site request forgery attacks.
The vulnerability exists due to insufficient validation of the HTTP request origin. A remote attacker can trick the victim to visit a specially crafted web page and perform arbitrary actions on behalf of the victim on the vulnerable website.
Affected software
Stapler
Jenkins
Jenkins LTS
Jenkins
Jenkins LTS
How to mitigate CVE-2026-84649
Install updates from vendor's website.
Jenkins - update to 2.580
Jenkins LTS - update to 2.568.3
Jenkins LTS - update to 2.568.3