# CVE-2021-21623: Incorrect permission checks in Jenkins Matrix Authorization Strategy Plugin may allow accessing some items

Source: https://junglewise.ai/threats/cve-2021-21623-incorrect-permission-checks-in-jenkins-matrix-authorization  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2022-05-24  
License: CC BY 4.0 with a link back

CVE-2021-21623 · Severity: low · CVSS 3.1 · Published 2022-05-24

Incorrect permission checks in Jenkins Matrix Authorization Strategy Plugin may allow accessing some items

Technologies: [org.jenkins-ci.plugins:matrix-auth (Maven)](https://junglewise.ai/threats/technologies/org-jenkins-ci-plugins-matrix-auth). Vendors: [Maven](https://junglewise.ai/threats/vendors/maven).

## Quick answers

**Is CVE-2021-21623 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2021-21623 being exploited in the wild.

**How severe is CVE-2021-21623?** Low severity, with a CVSS score of 3.1, published 24 May 2022.

**Which products and versions are affected?** org.jenkins-ci.plugins:matrix-auth (Maven) ECOSYSTEM:introduced=0,fixed=2.6.6.

**Is there a fix for CVE-2021-21623?** Yes. org.jenkins-ci.plugins:matrix-auth (Maven): upgrade to 2.6.6 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2021-21623?** Check whether you run org.jenkins-ci.plugins:matrix-auth (Maven) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- org.jenkins-ci.plugins:matrix-auth (Maven): upgrade to 2.6.6 or later

  ```sh
  # set org.jenkins-ci.plugins:matrix-auth to 2.6.6 in your pom.xml or build.gradle
  ```


## Affected products

- org.jenkins-ci.plugins:matrix-auth (Maven) ECOSYSTEM:introduced=0,fixed=2.6.6

## Identifiers

- CVE-2021-21623
- GHSA-96jw-3xw4-mq9p

## Related threats

- [Jenkins Matrix Authorization Strategy Plugin: Unsafe deserialization allows invocation of parameterless constructors](https://junglewise.ai/threats/cve-2026-42521-jenkins-matrix-authorization-strategy-plugin-unsafe)
- [Stored XSS vulnerability in Jenkins Matrix Authorization Strategy Plugin](https://junglewise.ai/threats/cve-2020-2226-stored-xss-vulnerability-in-jenkins-matrix-authorization-strategy)