CVE-2026-34148

Fedify is a TypeScript library for building federated server apps powered by ActivityPub. Prior to 1.9.6, 1.10.5, 2.0.8, and 2.1.1, @fedify/fedify follows HTTP redirects recursively in its remote document loader and authenticated document loader without enforcing a maximum redirect count or visited-URL loop detection. An attacker who controls a remote ActivityPub key or actor URL can force a server using Fedify to make repeated outbound requests from a single inbound request, leading to resource consumption and denial of service. This vulnerability is fixed in 1.9.6, 1.10.5, 2.0.8, and 2.1.1.

The following products are affected by CVE-2026-34148 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-34148.

URL	Resource
https://github.com/fedify-dev/fedify/releases/tag/1.10.5
https://github.com/fedify-dev/fedify/releases/tag/1.9.6
https://github.com/fedify-dev/fedify/releases/tag/2.0.8
https://github.com/fedify-dev/fedify/releases/tag/2.1.1
https://github.com/fedify-dev/fedify/security/advisories/GHSA-gm9m-gwc4-hwgp