Description
fastify-reply-from is a Fastify plugin to forward the current HTTP request to another server. Prior to 12.5.0, by crafting a malicious URL, an attacker could access routes that are not allowed, even though the reply.from is defined for specific routes in @fastify/reply-from. This vulnerability is fixed in 12.5.0.
Scores
CVSS v3
5.4
EPSS
0.0003
EPSS Percentile
7.7%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-441
Status
published
Products (2)
fastify/reply-from
< 12.4.0
fastify/reply-from
0 - 12.5.0npm
Published
Dec 01, 2025
Tracked Since
Feb 18, 2026