CVE-2026-42525 Jenkins Microsoft Entra ID (previously Azure AD) Plugin has an open redirect vulnerability
Attackers can exploit an unrestricted redirect URL in the Jenkins Microsoft Entra ID plugin to conduct phishing attacks against users.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-42525?
CVE-2026-42525 is a medium-severity vulnerability in Jenkins Microsoft Entra ID (previously Azure AD) Plugin, published on 29 Apr 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
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.
Weakness: CWE-601
Which versions are affected by CVE-2026-42525?
2 open source packages ship an affected version, including org.jenkins-ci.plugins:azure-ad. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
org.jenkins-ci.plugins:azure-ad Maven | All versions | 667.v4c5827a |
org.jenkins-ci.plugins:azure-ad Maven | All versions | 667.v4c5827a |
Products include Jenkins Azure Ad.
How do I fix CVE-2026-42525?
Upgrade org.jenkins-ci.plugins:azure-ad to 667.v4c5827a or later.
Is CVE-2026-42525 being exploited?
There is no known exploitation of CVE-2026-42525 in the wild and no public exploit code.
Other vulnerabilities in Jenkins Microsoft Entra ID (previously Azure AD) Plugin
- CVE-2023-24426 Insufficient Session Expiration in Jenkins Azure AD Plugin
- CVE-2021-21679 Jenkins Azure AD Plugin allows bypassing CSRF protection for any URL
- CVE-2019-10318 Jenkins Azure AD Plugin stored the client secret unencrypted
- CVE-2023-41935 Non-constant time nonce comparison in Jenkins Microsoft Entra ID (previously Azure AD) Plugin
- CVE-2020-2119 Client secret transmitted in plain text by Azure AD Plugin
Sources
Also known as GHSA-jp6g-g3v3-6gvf.