PT-2022-16059 · Unknown · Jsonwebtoken

Julienwoll

·

Published

2022-12-22

·

Updated

2026-06-04

·

CVE-2022-23539

CVSS v3.1

5.9

Medium

VectorAV:N/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:N
Name of the Vulnerable Software and Affected Versions jsonwebtoken versions <=8.5.1
Description The jsonwebtoken library could be misconfigured to use legacy, insecure key types for signature verification. For example, DSA keys could be used with the RS256 algorithm. Users are affected if they use an algorithm and key type combination other than those listed as unaffected. The issue has been fixed in version 9.0.0, which validates asymmetric key type and algorithm combinations.
Recommendations Update to version 9.0.0 to fix the issue. After updating, if you still intend to use invalid key type/algorithm combinations, set the allowInvalidAsymmetricKeyTypes option to true in the sign() and/or verify() functions.

Exploit

Fix

Use of a Broken Cryptographic Algorithm

Found an issue in the description? Have something to add? Feel free to write us 👾

Weakness Enumeration

Related Identifiers

CVE-2022-23539
GHSA-8CF7-32GW-WR33

Affected Products

Jsonwebtoken