Jenkins is missing a permission check in the authenticated users' profile menu
Research is free — Hunters explains how the bug works, the root-cause code pattern, how the fix addresses it, and how to test whether a target is affected, in chat. Investigate & write exploit is a paid run — the engine reads the advisory and fix commits, then builds and validates a working proof-of-concept exploit with reproduction steps.
Affected versions
Details
Jenkins 2.527 and earlier, LTS 2.516.2 and earlier does not perform a permission check for the authenticated user profile dropdown menu. This allows attackers without Overall/Read permission to obtain limited information about the Jenkins configuration by listing available options in this menu (e.g., whether Credentials Plugin is installed). Jenkins 2.528, LTS 2.516.3 requires Overall/Read permission to list various items in authenticated user profile dropdown menus.