Jenkins OpenId Connect Authentication Plugin 2.6 and earlier improperly determines that a redirect URL after login is legitimately pointing to Jenkins, allowing attackers to perform phishing attacks.

Jenkins OpenId Connect Authentication Plugin 2.6 and earlier stores a password of a local user account used as an anti-lockout feature in a recoverable format, allowing attackers with access to the Jenkins controller file system to recover the plain text password of that account, likely gaining administrator access to Jenkins.

Jenkins OpenID Plugin 2.4 and earlier improperly determines that a redirect URL after login is legitimately pointing to Jenkins.

A cross-site request forgery vulnerability in Jenkins openid Plugin in the OpenIdSsoSecurityRealm.DescriptorImpl#doValidate form validation method allows attackers to initiate a connection to an attacker-specified server.

A missing permission check in Jenkins openid Plugin in the OpenIdSsoSecurityRealm.DescriptorImpl#doValidate form validation method allows attackers with Overall/Read permission to initiate a connection to an attacker-specified server.