High severity8.8NVD Advisory· Published Sep 2, 2026· Updated Sep 3, 2026
CVE-2026-84649
CVE-2026-84649
Description
In Stapler 1839.ved17667b_a_eb_5 through 2107.v8dfcb_e8ed317 (both inclusive), except 2088.2093.vd7c3e58008a_6, included in Jenkins 2.447 through 2.579 (both inclusive), LTS 2.452.1 through 2.568.2 (both inclusive), an HTTP endpoint serving dynamically generated JavaScript resources embeds the user's cross-site request forgery (CSRF) token (crumb) as a string literal, allowing attackers with control over a page hosted on the same site as Jenkins to obtain a valid crumb for the targeted user's session and perform actions on their behalf.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
3- Range: 2.447 - 2.579, LTS 2.452.1 - 2.568.2
- Range: 1839.ved17667b_a_eb_5 - 2107.v8dfcb_e8ed317, except 2088.2093.vd7c3e58008a_6
Patches
Vulnerability mechanics
References
1News mentions
3- ⚡ Weekly Recap: Chrome 0-Day, Router Hijacks, Coder Supply Chain Attack and MoreThe Hacker News · Sep 7, 2026
- Jenkins: 14 Vulnerabilities Disclosed Together, Including High-Severity Deserialization FlawsVypr Intelligence · Sep 2, 2026
- Jenkins Security Advisory 2026-09-02Jenkins Security Advisories · Sep 2, 2026