CVE-2021-21686

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CVSS 3.1

8.1 high

EPSS

2%p79

Published

Nov 4, 2021 (Nov 4, 2021)

Modified

Jun 17, 2026

Description

File path filters in the agent-to-controller security subsystem of Jenkins 2.318 and earlier, LTS 2.303.2 and earlier do not canonicalize paths, allowing operations to follow symbolic links to outside allowed directories.

Vendors: jenkins
Products: jenkins
Weakness: CWE-59
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

NVD CVE.org GitHub PoCs EPSS (2.0%)

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