CVE-2025-68475

Fedify is a TypeScript library for building federated server apps powered by ActivityPub. Prior to versions 1.6.13, 1.7.14, 1.8.15, and 1.9.2, a Regular Expression Denial of Service (ReDoS) vulnerability exists in Fedify's document loader. The HTML parsing regex at packages/fedify/src/runtime/docloader.ts:259 contains nested quantifiers that cause catastrophic backtracking when processing maliciously crafted HTML responses. This issue has been patched in versions 1.6.13, 1.7.14, 1.8.15, and 1.9.2.

The following products are affected by CVE-2025-68475 vulnerability.

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Here, you will find a curated list of external links that provide in-depth information to CVE-2025-68475.

URL	Resource
https://github.com/fedify-dev/fedify/commit/2bdcb24d7d6d5886e0214ed504b63a6dc5488779
https://github.com/fedify-dev/fedify/commit/bf2f0783634efed2663d1b187dc55461ee1f987a
https://github.com/fedify-dev/fedify/releases/tag/1.6.13
https://github.com/fedify-dev/fedify/releases/tag/1.7.14
https://github.com/fedify-dev/fedify/releases/tag/1.8.15
https://github.com/fedify-dev/fedify/releases/tag/1.9.2
https://github.com/fedify-dev/fedify/security/advisories/GHSA-rchf-xwx2-hm93