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Advisory record · GHSA-v63g-v339-2673

Jenkins Script Security Plugin has sandbox bypass vulnerability involving crafted constructor bodies

CVSS 8.8 HighCriticalEPSS 0.48 · 98th percentile

Critical, because:

  • CVSS score 8.8 (7.0 or more) and EPSS 0.48 (0.1 or more): a high score and a real chance of exploitation in the next 30 days.

How we decide what’s critical

Published by the GitHub Advisory Database at 2 May 2024, 15:30 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
org.jenkins-ci.plugins:script-securityMaven<1336.vf33a1336.vf33a
Identifiers
GHSA-v63g-v339-2673 · CVE-2024-34144
Weakness (CWE)
CWE-693
Tags
Published
2 May 2024
Updated
7 Aug 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Script Security Plugin (Maven org.jenkins-ci.plugins:script-security) versions 1335.vf07d9ce377a_e and earlier are affected. An attacker who has permission to define and run sandboxed scripts, including Pipelines, can bypass the sandbox through crafted constructor bodies or Groovy classes that shadow certain classes, and execute arbitrary code on the Jenkins controller JVM. Upgrade to version 1336.vf33a.

Written 2 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
8.8 High 3.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H GitHub Advisory Database
  • CISA KEV Not listed.
  • EPSS 0.48, the 98th percentile, on 12 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:19 UTC First seen by agentprime
  2. 31 Oct 2026, 14:19 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.