A cross-site scripting (XSS) flaw was found in the way the commenting system of the ReviewBoard, a web-based code review tool, sanitized user input (new comments to be loaded). A remote attacker could provide a specially-crafted URL, which once visited by valid ReviewBoard user could lead to arbitrary HTML or web script execution in the 'diff viewer' or 'screenshot pages' components.

References: [1] http://www.reviewboard.org/news/ [2] http://www.reviewboard.org/docs/releasenotes/dev/reviewboard/1.6.3/

Relevant upstream patch: [3] https://github.com/reviewboard/reviewboard/commit/7a0a9d94555502278534dedcf2d75e9fccce8c3d