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.
History

Thu, 03 Sep 2026 12:15:00 +0000

Type Values Removed Values Added
Title Stapler CSRF Token Exposure in Jenkins

Thu, 03 Sep 2026 11:00:00 +0000

Type Values Removed Values Added
First Time appeared Jenkins Project
Jenkins Project jenkins
Vendors & Products Jenkins Project
Jenkins Project jenkins

Wed, 02 Sep 2026 18:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-352
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}


Wed, 02 Sep 2026 10:45:00 +0000

Type Values Removed Values Added
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.
References

cve-icon MITRE

Status: PUBLISHED

Assigner: jenkins

Published:

Updated: 2026-09-02T17:38:30.836Z

Reserved: 2026-09-01T21:55:27.033Z

Link: CVE-2026-84649

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-02T16:17:29.620

Modified: 2026-09-03T17:13:16.490

Link: CVE-2026-84649

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-03T12:00:04Z