Skip to content
Fencer Vulns
high 7.5

CVE-2026-48921 json

Jenkins Pipeline: Groovy Libraries Plugin does not prohibit symbolic links in shared libraries

published 2026-05-27 5 mo ago modified 2026-10-14 25 d ago also EUVD-2026-32512 , GHSA-qjq3-wqj5-g37q

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 21%
public exploits
0
none known

Summary

Jenkins Pipeline: Groovy Libraries Plugin 797.v90ea_a_9b_e45a_0 and earlier does not prohibit symbolic links in shared libraries, allowing attackers able to control the content of a library used by a Pipeline job to read arbitrary files on the Jenkins controller filesystem.

Patch / fix

  • maven io.jenkins.plugins:pipeline-groovy-lib 798.v5cc688825312
  • io.jenkins.plugins pipeline-groovy-lib 798.v5cc688825312
  • jenkins groovy_libraries 798.v5cc688825312

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-48921 updated cvss 5.5

pipeline-groovy-lib: Jenkins Pipeline Groovy Libraries Plugin: Information disclosure via symbolic links in shared libraries

  • Red Hat OpenShift Developer Tools and Services jenkins-2-plugins, ocp-tools-4/jenkins-rhel8, ocp-tools-4/jenkins-rhel9, ocp-tools-4/jenkins-agent-base-rhel8, ocp-tools-4/jenkins-agent-base-rhel9
    affected: no fix available “Fix deferred”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
5 mo ago

Exploit prediction

0.29% chance of exploitation in the next 30 days, higher than 21% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.5 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
GitHub 3.1 7.5 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
maven io.jenkins.plugins:pipeline-groovy-lib
<798.v5cc688825312
798.v5cc688825312

Affected products

  • Jenkins Project Jenkins Pipeline: Groovy Libraries Plugin

Classification

Weakness
  • CWE-59 Improper Link Resolution Before File Access

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.