Fedify has ReDoS Vulnerability in HTML Parsing Regex_CVE-2025-68475

7.5 / 10

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Description

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.

Basic Information

ID CVE-2025-68475

Source GitHub_M

Published Dec 22, 2025 at 21:31

Modified Dec 22, 2025 at 21:54

Affected Product

Vendor fedify-dev

Product fedify

Version < 1.6.13

Affected Versions fedify-dev fedify < 1.6.13
fedify-dev fedify >= 1.7.0, < 1.7.14
fedify-dev fedify >= 1.8.0, < 1.8.15
fedify-dev fedify >= 1.9.0, < 1.9.2

CWE Classification

CWE-1333

References

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    "published": "2025-12-22T21:31:20.314Z",
    "modified": "2025-12-22T21:54:45.635Z",
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    "references": "https://github.com/fedify-dev/fedify/security/advisories/GHSA-rchf-xwx2-hm93\nhttps://github.com/fedify-dev/fedify/commit/2bdcb24d7d6d5886e0214ed504b63a6dc5488779\nhttps://github.com/fedify-dev/fedify/commit/bf2f0783634efed2663d1b187dc55461ee1f987a\nhttps://github.com/fedify-dev/fedify/releases/tag/1.6.13\nhttps://github.com/fedify-dev/fedify/releases/tag/1.7.14\nhttps://github.com/fedify-dev/fedify/releases/tag/1.8.15\nhttps://github.com/fedify-dev/fedify/releases/tag/1.9.2",
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