CVE-2025-23221 | BDVDB-2026-263443 Detail
dahliafedify
Description#
Fedify is a TypeScript library for building federated server apps powered by ActivityPub and other standards. This vulnerability allows a user to maneuver the Webfinger mechanism to perform a GET request to any internal resource on any Host, Port, URL combination regardless of present security mechanisms, and forcing the victim’s server into an infinite loop causing Denial of Service. Moreover, this issue can also be maneuvered into performing a Blind SSRF attack. This vulnerability is fixed in 1.0.14, 1.1.11, 1.2.11, and 1.3.4.
Impact#
Per CVSS v3.1: confidentiality impact low, integrity impact none, availability impact low. Attack vector: network.
Weaknesses#
References#
- https://github.com/dahlia/fedify/security/advisories/GHSA-c59p-wq67-24wx
- https://github.com/dahlia/fedify/commit/8be3c2038eebf4ae12481683a1e809b314be3151
- https://github.com/dahlia/fedify/commit/c505eb82fcd6b5b17174c6659c29721bc801ab9a
- https://github.com/dahlia/fedify/commit/e921134dd5097586e4563ea80b9e8d1b5460a645
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.