CVE-2025-25194: Server-Side Request Forgery (SSRF) in activitypub_federation

February 10, 2025 (updated February 11, 2025)

This vulnerability allows a user to bypass any predefined hardcoded URL path or security anti-Localhost mechanism and perform an arbitrary GET request to any Host, Port and URL using a Webfinger Request.

References

github.com/LemmyNet/activitypub-federation-rust
github.com/LemmyNet/lemmy/security/advisories/GHSA-7723-35v7-qcxw
github.com/advisories/GHSA-7723-35v7-qcxw
nvd.nist.gov/vuln/detail/CVE-2025-25194

Code Behaviors & Features

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