Jenkins 2.333 and earlier, LTS 2.319.2 and earlier is affected by the XStream library’s vulnerability [CVE-2021-43859](https://x-stream.github.io/CVE-2021-43859.html). This library is used by Jenkins to serialize and deserialize various XML files, like global and job `config.xml`, `build.xml`, and numerous others.

This allows attackers able to submit crafted XML files to Jenkins to be parsed as configuration, e.g. through the `POST config.xml` API, to cause a denial of service (DoS).

Affected Packages

Maven org.jenkins-ci.main:jenkins-core

Affected versions: 2.320 (fixed in 2.334)

Maven org.jenkins-ci.main:jenkins-core

Affected versions: 0 (fixed in 2.319.3)

Related CVEs

CVE-2022-0538

Key Information

GHSA ID

GHSA-34wx-x2w9-vqm3

Published

February 10, 2022 12:00 AM

Last Modified

December 22, 2023 1:51 PM

CVSS Score

5.0 /10

Primary Ecosystem

Maven

Primary Package

org.jenkins-ci.main:jenkins-core

GitHub Reviewed

✓ Yes

Dataset

Last updated: August 24, 2025 6:28 AM

Data from GitHub Advisory Database. This information is provided for research and educational purposes.