CVE-2022-23539

MEDIUM

Auth0 Jsonwebtoken < 8.5.1 - Broken Cryptographic Algorithm

Title source: rule
STIX 2.1

Description

Versions `<=8.5.1` of `jsonwebtoken` library could be misconfigured so that legacy, insecure key types are used for signature verification. For example, DSA keys could be used with the RS256 algorithm. You are affected if you are using an algorithm and a key type other than a combination listed in the GitHub Security Advisory as unaffected. This issue has been fixed, please update to version 9.0.0. This version validates for asymmetric key type and algorithm combinations. Please refer to the above mentioned algorithm / key type combinations for the valid secure configuration. After updating to version 9.0.0, if you still intend to continue with signing or verifying tokens using invalid key type/algorithm value combinations, you’ll need to set the `allowInvalidAsymmetricKeyTypes` option to `true` in the `sign()` and/or `verify()` functions.

Scores

CVSS v3 5.9
EPSS 0.0008
EPSS Percentile 22.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-327
Status published
Products (2)
auth0/jsonwebtoken < 8.5.1
npm/jsonwebtoken 0 - 9.0.0npm
Published Dec 23, 2022
Tracked Since Feb 18, 2026