# CVE-2026-42525: Jenkins Microsoft Entra ID (previously Azure AD) Plugin has an open redirect vulnerability

Source: https://junglewise.ai/threats/cve-2026-42525-jenkins-microsoft-entra-id-previously-azure-ad-plugin-has-an-open  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-04-29  
License: CC BY 4.0 with a link back

CVE-2026-42525 · Severity: medium · CVSS 4.3 · Published 2026-04-29

Jenkins Microsoft Entra ID (previously Azure AD) Plugin 666.v6060de32f87d and earlier does not restrict the redirect URL after login, allowing attackers to perform phishing attacks.

Technologies: [org.jenkins-ci.plugins:azure-ad (Maven)](https://junglewise.ai/threats/technologies/org-jenkins-ci-plugins-azure-ad). Vendors: [Jenkins](https://junglewise.ai/threats/vendors/jenkins), [Maven](https://junglewise.ai/threats/vendors/maven).

## Quick answers

**Is CVE-2026-42525 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-42525 being exploited in the wild.

**How severe is CVE-2026-42525?** Medium severity, with a CVSS score of 4.3, published 29 April 2026.

**Which products and versions are affected?** org.jenkins-ci.plugins:azure-ad (Maven) ECOSYSTEM:introduced=0,fixed=667.v4c5827a.

**Is there a fix for CVE-2026-42525?** Yes. org.jenkins-ci.plugins:azure-ad (Maven): upgrade to 667.v4c5827a or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2026-42525?** Check whether you run Jenkins Azure Ad or org.jenkins-ci.plugins:azure-ad (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:azure-ad (Maven): upgrade to 667.v4c5827a or later

  ```sh
  # set org.jenkins-ci.plugins:azure-ad to 667.v4c5827a in your pom.xml or build.gradle
  ```


## Affected products

- Jenkins Azure Ad
- org.jenkins-ci.plugins:azure-ad (Maven) ECOSYSTEM:introduced=0,fixed=667.v4c5827a

## Identifiers

- CVE-2026-42525
- GHSA-jp6g-g3v3-6gvf

## Related threats

- [Non-constant time nonce comparison in Jenkins Microsoft Entra ID (previously Azure AD) Plugin](https://junglewise.ai/threats/cve-2023-41935-non-constant-time-nonce-comparison-in-jenkins-microsoft-entra-id)
- [Insufficient Session Expiration in Jenkins Azure AD Plugin](https://junglewise.ai/threats/cve-2023-24426-insufficient-session-expiration-in-jenkins-azure-ad-plugin)
- [Jenkins Azure AD Plugin allows bypassing CSRF protection for any URL](https://junglewise.ai/threats/cve-2021-21679-jenkins-azure-ad-plugin-allows-bypassing-csrf-protection-for-any)
- [Client secret transmitted in plain text by Azure AD Plugin](https://junglewise.ai/threats/cve-2020-2119-client-secret-transmitted-in-plain-text-by-azure-ad-plugin)
- [Jenkins Azure AD Plugin stored the client secret unencrypted](https://junglewise.ai/threats/cve-2019-10318-jenkins-azure-ad-plugin-stored-the-client-secret-unencrypted)