Record summary

CVE-2022-23540 has a selected CVSS score of 6.4 (medium).

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.

Description source: CVE List

Exploitation context

CISA SSVC decision

ExploitationNone
AutomatableNo
Technical impactPartial

CISA Coordinator · SSVC 2.0.3 · Evaluated Jul 16, 2024 · Source: CVE List

Affected products and versions

2
ProductSourceVersion rangeStatus
CVE List<= 8.5.1affected
GitHub AdvisoryBefore 9.0.0 · Fixed in 9.0.0affected

References

5