What is CVE-2022-23539?

CVE-2022-23539 is a medium-severity vulnerability in Auth0 Node-jsonwebtoken, classified under Use of a Broken or Risky Cryptographic Algorithm. CVSS score: 5.9/10. Published 2022-12-22.

How severe is CVE-2022-23539?

Medium severity. CVSS v3 base score is 5.9 out of 10.

Is CVE-2022-23539 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Auth0 Node-jsonwebtoken

CVE-2022-23539

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…

Vulnerability class: POODLE (CVE-2014-3566)

EPSS: 0.001 (24.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:N.

Affected products

Auth0 Node-jsonwebtoken — versions <= 8.5.1

Weakness classification (CWE)

CWE-327 — Use of a Broken or Risky Cryptographic Algorithm

Public proof-of-concept exploits

References

https://github.com/auth0/node-jsonwebtoken/security/advisories/GHSA-8cf7-32gw-wr33 (x_refsource_CONFIRM)
https://github.com/auth0/node-jsonwebtoken/commit/e1fa9dcc12054a8681db4e6373da1b30cf7016e3 (x_refsource_MISC)
security.netapp.com/advisory/ntap-20240621-0007/

Frequently asked questions

What is CVE-2022-23539?: CVE-2022-23539 is a medium-severity vulnerability in Auth0 Node-jsonwebtoken, classified under Use of a Broken or Risky Cryptographic Algorithm. CVSS score: 5.9/10. Published 2022-12-22.
How severe is CVE-2022-23539?: Medium severity. CVSS v3 base score is 5.9 out of 10.
Is CVE-2022-23539 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.