# Sandbox bypass in Script Security Plugin

Advisory record · `GHSA-xvxq-hq48-xphm`

- **Identifiers:** `GHSA-xvxq-hq48-xphm` · `CVE-2019-1003029`
- **State:** Confirmed
- **Severity:** CVSS 9.9 Critical
- **Critical:** Yes: KEV, CVSS 9+, CVSS 7+ and EPSS
- **Weakness (CWE):** [CWE-693](https://cwe.mitre.org/data/definitions/693.html)
- **Tags:** [CWE-693](https://agentprime.io/advisories/tag/cwe-693.md)
- **Published:** 13 May 2022
- **Updated:** 22 Oct 2025
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 13 May 2022, 01:00 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Critical

Critical, because:

- In CISA’s KEV catalogue since 25 Apr 2022: it is known to be exploited.
- CVSS score 9.9: 9.0 or more.
- CVSS score 9.9 (7.0 or more) and EPSS 0.74 (0.1 or more): a high score and a real chance of exploitation in the next 30 days.

How we decide what’s critical: <https://agentprime.io/advisories/critical.md>

## Affected packages

- `org.jenkins-ci.plugins:script-security` (Maven): affected `<1.54`; fixed in `1.54`

## Machine-written summary

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

> Jenkins Script Security Plugin versions before 1.54 contain a sandbox bypass. An attacker with Overall/Read permission can execute arbitrary code on the Jenkins master JVM. Upgrade script-security to version 1.54 or later.

Written 7 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

- 9.9 Critical, CVSS 3.1: `CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:H`, from GitHub Advisory Database

- **CISA KEV:** Listed since 25 Apr 2022: known to be exploited.
- **EPSS:** 0.74, the 99th percentile, on 13 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 15:10 UTC: First seen by agentprime
- 31 Oct 2026, 15:10 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-xvxq-hq48-xphm)

## Sources

- [GitHub Advisory Database: GHSA-xvxq-hq48-xphm](https://github.com/advisories/GHSA-xvxq-hq48-xphm)
- [OSV: GHSA-xvxq-hq48-xphm](https://osv.dev/vulnerability/GHSA-xvxq-hq48-xphm)
- <https://nvd.nist.gov/vuln/detail/CVE-2019-1003029>
- <https://access.redhat.com/errata/RHSA-2019:0739>
- <https://github.com/jenkinsci/script-security-plugin>
- <https://jenkins.io/security/advisory/2019-03-06/#SECURITY-1336%20%281%29>
- <https://jenkins.io/security/advisory/2019-03-06/#SECURITY-1336%20%281%29>
- <https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-1003029>
- <http://packetstormsecurity.com/files/166778/Jenkins-Remote-Code-Execution.html>

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.

## Check whether this affects you

A Match means an installed version is in the affected range above. Most don’t affect the app; agentprime hasn’t analysed this one yet.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), ask your agent to check the project: `check_lockfile` sends a lockfile, `check_packages` a list of installed packages, and both return the Matches and the upgrades that clear them. `get_advisory` returns this record. Setup: <https://agentprime.io/mcp.md>
- In a browser: <https://agentprime.io/check/> reads your lockfile in the browser, never uploading it.
- Whether it touches your code, with file and line: the Claude Code plugin, <https://agentprime.io/plugin.md>
- As JSON: <https://api.agentprime.io/v1/advisories/GHSA-xvxq-hq48-xphm>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

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The web page: <https://agentprime.io/advisories/GHSA-xvxq-hq48-xphm/>. Everything for agents: <https://agentprime.io/llms.txt>.