CVE-2025-68475

HIGH EPSS 37.9%
Published Dec 22, 20256mo ago · Modified Jun 17, 20262w ago
7.5 CVSS 3.1
High
Find Similar
Published Dec 22, 2025 6mo ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
7.5
Exploitability
3.9
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
37.9% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-1333

Affected Products 4

VendorProductVersionRange
fedifyfedify* <1.6.13
fedifyfedify*≥1.7.0  –  <1.7.14
fedifyfedify*≥1.8.1  –  <1.8.15
fedifyfedify*≥1.9.0  –  <1.9.2

References 7

  • github.com https://github.com/fedify-dev/fedify/commit/2bdcb24d7d6d5886e0214ed504b63a6dc5488779
    Patch
  • github.com https://github.com/fedify-dev/fedify/commit/bf2f0783634efed2663d1b187dc55461ee1f987a
    Patch
  • github.com https://github.com/fedify-dev/fedify/releases/tag/1.6.13
    ProductRelease Notes
  • github.com https://github.com/fedify-dev/fedify/releases/tag/1.7.14
    ProductRelease Notes
  • github.com https://github.com/fedify-dev/fedify/releases/tag/1.8.15
    ProductRelease Notes
  • github.com https://github.com/fedify-dev/fedify/releases/tag/1.9.2
    ProductRelease Notes
  • github.com https://github.com/fedify-dev/fedify/security/advisories/GHSA-rchf-xwx2-hm93
    ExploitMitigationVendor Advisory

Remediation

  • github.com https://github.com/fedify-dev/fedify/commit/2bdcb24d7d6d5886e0214ed504b63a6dc5488779
    Patch
  • github.com https://github.com/fedify-dev/fedify/commit/bf2f0783634efed2663d1b187dc55461ee1f987a
    Patch