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

Advisory record · `GHSA-qjq3-wqj5-g37q`

- **Identifiers:** `GHSA-qjq3-wqj5-g37q` · `CVE-2026-48921`
- **State:** Confirmed
- **Severity:** CVSS 7.5 High
- **Critical:** No
- **Weakness (CWE):** [CWE-59](https://cwe.mitre.org/data/definitions/59.html)
- **Tags:** [Path traversal](https://agentprime.io/advisories/tag/path-traversal.md)
- **Published:** 27 May 2026
- **Updated:** 1 Jul 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 27 May 2026, 15:33 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `io.jenkins.plugins:pipeline-groovy-lib` (Maven): affected `<798.v5cc688825312`; fixed in `798.v5cc688825312`

## Machine-written summary

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

> Jenkins Pipeline: Groovy Libraries Plugin versions 797.v90ea_a_9b_e45a_0 and earlier (Maven package io.jenkins.plugins:pipeline-groovy-lib) do not prohibit symbolic links in shared libraries. An attacker who can control the content of a library used by a Pipeline job can read arbitrary files on the Jenkins controller filesystem. Upgrade to version 798.v5cc688825312, which prohibits symbolic links in shared libraries.

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

- 7.5 High, CVSS 3.1: `CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H`, from GitHub Advisory Database

- **CISA KEV:** Not listed.
- **EPSS:** 0.0029, the 21st percentile, on 10 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 14:20 UTC: First seen by agentprime
- 31 Oct 2026, 14:20 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-qjq3-wqj5-g37q)

## Sources

- [GitHub Advisory Database: GHSA-qjq3-wqj5-g37q](https://github.com/advisories/GHSA-qjq3-wqj5-g37q)
- [OSV: GHSA-qjq3-wqj5-g37q](https://osv.dev/vulnerability/GHSA-qjq3-wqj5-g37q)
- <https://nvd.nist.gov/vuln/detail/CVE-2026-48921>
- <https://github.com/jenkinsci/pipeline-groovy-lib-plugin>
- <https://www.jenkins.io/security/advisory/2026-05-27/#SECURITY-3727>

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-qjq3-wqj5-g37q>, 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-qjq3-wqj5-g37q/>. Everything for agents: <https://agentprime.io/llms.txt>.