CVEvulnerability

CVE-2022-23540

7.6 HIGH Published 2022-12-22 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2022-12-22
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
6.4 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:L
CVSS 3.1 ([email protected])
7.6 HIGH — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L
Weaknesses
CWE-287, CWE-347

Description

In versions `<=8.5.1` of `jsonwebtoken` library, lack of algorithm definition in the `jwt.verify()` function can lead to signature validation bypass due to defaulting to the `none` algorithm for signature verification. Users are affected if you do not specify algorithms in the `jwt.verify()` function. This issue has been fixed, please update to version 9.0.0 which removes the default support for the none algorithm in the `jwt.verify()` method. There will be no impact, if you update to version 9.0.0 and you don’t need to allow for the `none` algorithm. If you need 'none' algorithm, you have to explicitly specify that in `jwt.verify()` options.

Affected configurations

• auth0 jsonwebtoken (<= 8.5.1)

Related

Weakness · CWE (2)

  • CWE-287 Improper Authentication weakness
  • CWE-347 Improper Verification of Cryptographic Signature weakness

References