CVE-2022-31142

Name: CVE-2022-31142
Creator: NVD / NIST
Published: 2022-07-14T19:15:07.787+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.16%

Last modified Jun 17, 2026

CVE-2022-31142 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. @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. EPSS estimates a 1.16% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

1.16%

63.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Fastify	Bearer-Auth	>= 5.0.1, < 7.0.2
Fastify	Bearer-Auth	8.0.0

References

https://github.com/fastify/fastify-bearer-auth/commit/0c468a616d7e56126dc468150f6a5a92e530b8e4Patch, Third Party Advisory
https://github.com/fastify/fastify-bearer-auth/commit/39353b15409ee99474545f615ffb16180cf3b716Patch, Third Party Advisory
https://github.com/fastify/fastify-bearer-auth/commit/f921a0582dc83112039004a9b5041141b50c5b3fPatch, Third Party Advisory
https://github.com/fastify/fastify-bearer-auth/security/advisories/GHSA-376v-xgjx-7mfrThird Party Advisory
https://hackerone.com/reports/1633287Permissions Required, Third Party Advisory
https://github.com/fastify/fastify-bearer-auth/commit/0c468a616d7e56126dc468150f6a5a92e530b8e4Patch, Third Party Advisory
https://github.com/fastify/fastify-bearer-auth/commit/39353b15409ee99474545f615ffb16180cf3b716Patch, Third Party Advisory
https://github.com/fastify/fastify-bearer-auth/commit/f921a0582dc83112039004a9b5041141b50c5b3fPatch, Third Party Advisory
https://github.com/fastify/fastify-bearer-auth/security/advisories/GHSA-376v-xgjx-7mfrThird Party Advisory
https://hackerone.com/reports/1633287Permissions Required, Third Party Advisory

Timeline

Published: Jul 14, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-31142?

How severe is CVE-2022-31142?

CVE-2022-31142 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.16% probability of exploitation in the next 30 days.

How do I fix CVE-2022-31142?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-31142?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST