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.
Scores
CVSS v3
5.4
EPSS
0.0011
EPSS Percentile
29.1%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:L
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-835
CWE-918
Status
published
Products (5)
dahlia/fedify
< 1.0.14
dahlia/fedify
>= 1.1.0, < 1.1.11
dahlia/fedify
>= 1.2.0, < 1.2.11
dahlia/fedify
>= 1.3.0, < 1.3.4
fedify/fedify
1.0.13 - 1.0.14npm
Published
Jan 20, 2025
Tracked Since
Feb 18, 2026