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CRITICAL severity

CVE-2024-34144 — script-security

CRITICAL

CVE-2024-34144 is a critical-severity (CVSS 9.8) CWE-693 vulnerability in org.jenkins-ci.plugins:script-security. EPSS puts its 30-day exploitation probability at 48.4% (99th percentile). A fix is available for org.jenkins-ci.plugins:script-security — see the affected versions and patch details below.

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

Also known asGHSA-v63g-v339-2673
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Nov 7, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

  • CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.
  • 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 CVE-2024-34144.

EPSS Exploitation Probability

via FIRST.org ↗
48.4%probability of exploitation in next 30 days
High Risk0.00%
Lower risk than most CVEs99th percentile — riskier than 99% of all scored CVEsHighest risk
45.6%50.0%54.4%58.8%50.1%48.4%May 26Sep 26Nov 26

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

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected
☕org.jenkins-ci.plugins:script-security

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 Script Security Plugin provides a sandbox feature that allows low privileged users to define scripts, including Pipelines, that are generally safe to execute. Calls to code defined inside a sandboxed script are intercepted, and various allowlists are checked to determine whether the call is to be allowed.

Multiple sandbox bypass vulnerabilities exist in Script Security Plugin 1335.vf07d9ce377a_e and earlier:

  • Crafted constructor bodies that invoke other constructors can be used to construct any subclassable type via implicit casts.

  • Sandbox-defined Groovy classes that shadow specific non-sandbox-defined classes can be used to construct any subclassable type.

These vulnerabilities allow attackers with permission to define and run sandboxed scripts, including Pipelines, to bypass the sandbox protection and execute arbitrary code in the context of the Jenkins controller JVM.

Script Security Plugin 1336.vf33a_a_9863911 has additional restrictions and sanity checks to ensure that super constructors cannot be constructed without being intercepted by the sandbox:

  • Calls to to other constructors using this are now intercepted by the sandbox.

  • Classes in packages that can be shadowed by Groovy-defined classes are no longer ignored by the sandbox when intercepting super constructor calls.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
☕Mavenorg.jenkins-ci.plugins:script-securityall versions1336.vf33aorg.jenkins-ci.plugins:script-security:1336.vf33a

Affected Products

1 product · 1 configurations
Application
script securityjenkins
≤ 1335.vf07d9ce377a_e
range

Detection & mitigation playbook

Open-source dependency

  1. Detect

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

  2. Fix

    Update org.jenkins-ci.plugins:script-security to 1336.vf33a or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2024-34144 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.

Fixing This On Your OS

If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.

Red HatImportant

Red Hat rates the security impact of this vulnerability as Important due to the worst case scenario resulting in a process being able to access resources outside an assigned sandbox. The vulnerabilities that allow for sandbox bypass have been identified in versions up to 1335.vf07d9ce377a_e of the Script Security…

ProductFixed inAdvisory
OCP-Tools-4.12-RHEL-8jenkins-0:2.440.3.1716445200-3.el8RHSA-2024:3635
OCP-Tools-4.12-RHEL-8jenkins-0:2.462.3.1730119132-3.el8RHSA-2024:8886
OCP-Tools-4.13-RHEL-8jenkins-0:2.440.3.1716445150-3.el8RHSA-2024:3636
OCP-Tools-4.14-RHEL-8jenkins-0:2.440.3.1716387933-3.el8RHSA-2024:3634
OCP-Tools-4.15-RHEL-8jenkins-0:2.440.3.1718879390-3.el8RHSA-2024:4597

Frequently Asked Questions

Jenkins Script Security Plugin provides a sandbox feature that allows low privileged users to define scripts, including Pipelines, that are generally safe to execute. Calls to code defined inside a sandboxed script are intercepted, and various allowlists are checked to determine whether the call is to be allowed. Multiple sandbox bypass vulnerabilities exist in Script Security Plugin 1335.vf07d9ce377a_e and earlier: - Crafted constructor bodies that invoke other constructors can be used to construct any subclassable type via implicit casts. - Sandbox-defined Groovy classes that shadow speci
O3 Security · Impact-Aware SCA

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CVE-2024-34144: script-security RCE — Fixed in 1336.vf33a