CVE-2025-23221

MEDIUM EPSS 43.0%
Published Jan 20, 20251y ago · Modified Jun 17, 20262w ago
5.4 CVSS 3.1
Medium
Find Similar
Published Jan 20, 2025 1y ago
Last Modified Jun 17, 2026 2w ago

Description

Fedify is a TypeScript library for building federated server apps powered by ActivityPub and other standards. This vulnerability allows a user to maneuver the Webfinger mechanism to perform a GET request to any internal resource on any Host, Port, URL combination regardless of present security mechanisms, and forcing the victim’s server into an infinite loop causing Denial of Service. Moreover, this issue can also be maneuvered into performing a Blind SSRF attack. This vulnerability is fixed in 1.0.14, 1.1.11, 1.2.11, and 1.3.4.

CVSS Details

Base Score
5.4
Exploitability
2.2
Impact
2.7
Vector string
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:L
Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction None
Scope Changed
Confidentiality Low
Integrity None
Availability Low

Threat Intelligence

EPSS Exploit Probability
43.0% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 2

CWE-835
CWE-918 Server-Side Request Forgery (SSRF) Validation

References 4

  • github.com https://github.com/dahlia/fedify/commit/8be3c2038eebf4ae12481683a1e809b314be3151
  • github.com https://github.com/dahlia/fedify/commit/c505eb82fcd6b5b17174c6659c29721bc801ab9a
  • github.com https://github.com/dahlia/fedify/commit/e921134dd5097586e4563ea80b9e8d1b5460a645
  • github.com https://github.com/dahlia/fedify/security/advisories/GHSA-c59p-wq67-24wx

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.