Unrestricted Redirect in Jenkins Microsoft Entra ID Plugin Enables Phishing
CVE-2026-42525 Published on April 29, 2026
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.
Vulnerability Analysis
CVE-2026-42525 can be exploited with network access, requires user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality, with no impact on integrity, and no impact on availability.
Weakness Type
What is an Open Redirect Vulnerability?
A web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a Redirect. This simplifies phishing attacks. An http parameter may contain a URL value and could cause the web application to redirect the request to the specified URL. By modifying the URL value to a malicious site, an attacker may successfully launch a phishing scam and steal user credentials. Because the server name in the modified link is identical to the original site, phishing attempts have a more trustworthy appearance.
CVE-2026-42525 has been classified to as an Open Redirect vulnerability or weakness.
Products Associated with CVE-2026-42525
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Affected Versions
Jenkins Project Jenkins Microsoft Entra ID (previously Azure AD) Plugin:- Before and including 666.v6060de32f87d is affected.