CVE-2022-31142

HIGH

@fastify/bearer-auth <7.0.2-8.0.1 - Info Disclosure

Title source: llm
STIX 2.1

Description

@fastify/bearer-auth is a Fastify plugin to require bearer Authorization headers. @fastify/bearer-auth prior to versions 7.0.2 and 8.0.1 does not securely use crypto.timingSafeEqual. A malicious attacker could estimate the length of one valid bearer token. According to the corresponding RFC 6750, the bearer token has only base64 valid characters, reducing the range of characters for a brute force attack. Version 7.0.2 and 8.0.1 of @fastify/bearer-auth contain a patch. There are currently no known workarounds. The package fastify-bearer-auth, which covers versions 6.0.3 and prior, is also vulnerable starting at version 5.0.1. Users of fastify-bearer-auth should upgrade to a patched version of @fastify/bearer-auth.

Scores

CVSS v3 7.5
EPSS 0.0074
EPSS Percentile 73.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-208 CWE-203
Status published
Products (4)
fastify/bearer-auth 8.0.0
fastify/bearer-auth 0 - 7.0.2npm
fastify/bearer-auth 5.0.1 - 7.0.2
npm/fastify-bearer-auth 5.0.1npm
Published Jul 14, 2022
Tracked Since Feb 18, 2026