Gallery 3.0.4 was released with the following release notes:
After several extensive internal and external security audits which discovered 22 distinct vulnerabilities, we are releasing Gallery 3.0.4 as a security release. All of the issues require that someone with malicious intent either have an account with edit permissions, or trick a user with edit permissions into clicking on a malicious link. In most cases, this can only lead to a possible XSS vulnerability, but in several instances it allows arbitrary PHP code execution.
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This update has been submitted for testing by limb.
This update is currently being pushed to the Fedora EPEL 6 testing updates repository.
This update has been pushed to testing
This update has reached 14 days in testing and can be pushed to stable now if the maintainer wishes
This update has been submitted for stable by limb.
This update is currently being pushed to the Fedora EPEL 6 stable updates repository.
This update has been pushed to stable