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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.

PUBLISHED Reserved 2025-12-18 | Published 2025-12-22 | Updated 2025-12-22 | Assigner GitHub_M




HIGH: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Problem types

CWE-1333: Inefficient Regular Expression Complexity

Product status

< 1.6.13
affected

>= 1.7.0, < 1.7.14
affected

>= 1.8.0, < 1.8.15
affected

>= 1.9.0, < 1.9.2
affected

References

github.com/...fedify/security/advisories/GHSA-rchf-xwx2-hm93

github.com/...ommit/2bdcb24d7d6d5886e0214ed504b63a6dc5488779

github.com/...ommit/bf2f0783634efed2663d1b187dc55461ee1f987a

github.com/fedify-dev/fedify/releases/tag/1.6.13

github.com/fedify-dev/fedify/releases/tag/1.7.14

github.com/fedify-dev/fedify/releases/tag/1.8.15

github.com/fedify-dev/fedify/releases/tag/1.9.2

cve.org (CVE-2025-68475)

nvd.nist.gov (CVE-2025-68475)

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Data based on CVE®. Copyright © 1999-2025, The MITRE Corporation. All rights reserved.