Jenkins Bitbucket Server Integration Plugin 2.1.0 through 4.1.3 (both inclusive) allows attackers to craft URLs that would bypass the CSRF protection of any target URL in Jenkins.

Jenkins Bitbucket Server Integration Plugin 3.1.0 and earlier does not perform permission checks in several HTTP endpoints, allowing attackers with Overall/Read permission to create, view, and delete BitBucket Server consumers.

Jenkins Bitbucket Server Integration Plugin 3.1.0 and earlier does not limit URL schemes for callback URLs on OAuth consumers, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers able to create BitBucket Server consumers.