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HIGH severity

Jenkins Pipeline: Groovy Libraries Plugin does not prohibit symbolic links in shared librariesGHSA-qjq3-wqj5-g37q

HIGH

GHSA-qjq3-wqj5-g37q is a high-severity (CVSS 7.5) CWE-59 vulnerability in io.jenkins.plugins:pipeline-groovy-lib. A fix is available for io.jenkins.plugins:pipeline-groovy-lib — see the affected versions and patch details below.

Also known asCVE-2026-48921
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Oct 8, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

  • A successful exploit gives an attacker total control of the affected component, not partial access.
  • CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for GHSA-qjq3-wqj5-g37q.

EPSS Exploitation Probability

via FIRST.org ↗
0.4%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs36th percentile — riskier than 36% of all scored CVEsHighest risk
0.00%0.31%0.62%0.93%0.4%0.4%Jun 26Sep 26Oct 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

GHSA-qjq3-wqj5-g37q by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 384,534 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.

Real-World Exposure

1 pkg affected
☕io.jenkins.plugins:pipeline-groovy-lib

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.

Description

Jenkins Pipeline: Groovy Libraries Plugin 797.v90ea_a_9b_e45a_0 and earlier does not prohibit symbolic links in shared libraries.

This allows attackers able to control the content of a library used by a Pipeline job to read arbitrary files on the Jenkins controller filesystem.

Pipeline: Groovy Libraries Plugin 798.v5cc688825312 prohibits symbolic links in shared libraries.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
☕Mavenio.jenkins.plugins:pipeline-groovy-liball versions798.v5cc688825312io.jenkins.plugins:pipeline-groovy-lib:798.v5cc688825312

Affected Products

1 product · 1 configurations
Application
pipeline\jenkins
< 798.v5cc688825312
1 version
_groovy_libraries

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for io.jenkins.plugins:pipeline-groovy-lib, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update io.jenkins.plugins:pipeline-groovy-lib to 798.v5cc688825312 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-qjq3-wqj5-g37q is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

Jenkins Pipeline: Groovy Libraries Plugin 797.v90ea_a_9b_e45a_0 and earlier does not prohibit symbolic links in shared libraries. This allows attackers able to control the content of a library used by a Pipeline job to read arbitrary files on the Jenkins controller filesystem. Pipeline: Groovy Libraries Plugin 798.v5cc688825312 prohibits symbolic links in shared libraries.
O3 Security · Impact-Aware SCA

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