PT-2026-44014 · Jenkins · Groovy Libraries Plugin

P1S1O + 1 · Published 2026-05-27 · Updated 2026-05-28 · CVE-2026-48921

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Jenkins Pipeline: Groovy Libraries Plugin versions prior to 797.v90ea a 9b e45a 0

Description The plugin does not prohibit symbolic links in shared libraries. This allows attackers who can control the content of a library used by a Pipeline job to read arbitrary files on the Jenkins controller filesystem.

Recommendations Update to a version later than 797.v90ea a 9b e45a 0.

Fix

Link Following

Weakness Enumeration

CWE-59

Related Identifiers

CVE-2026-48921

Affected Products

Groovy Libraries Plugin

References · 4

• https://jenkins.io/security/advisory/2026-05-27/#SECURITY-3727 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-48921 · Security Note
• https://t.me/CVEtracker/55126 · Telegram Post
• https://t.me/cveNotify/165038 · Telegram Post