A security issue has been reported in the Shibboleth authentication module for Drupal, which can be exploited by malicious users to perform certain actions with escalated privileges.
An error exists in the handling of statically granted permissions for Shibboleth sessions. This can be exploited to perform certain actions with escalated privileges by logging-in using a browser that has not been closed by another user after logging-out.
The security issue is reported in versions prior to 6.x-3.2 and 5.x-3.4.
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