The MessageBundleWhiteList class of atlassian-gadgets before version 4.2.37, from version 4.3.0 before 4.3.14, from version before, from version 4.4.0 before 4.4.12, and from version 5.0.0 before 5.0.1 allowed unexpected DNS lookups and requests to arbitrary services as it incorrectly obtained application base url information from the executing http request which could be attacker controlled.

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