CVE-2015-9235

In jsonwebtoken node module before 4.2.2 it is possible for an attacker to bypass verification when a token digitally signed with an asymmetric key (RS/ES family) of algorithms but instead the attacker send a token digitally signed with a symmetric algorithm (HS* family).

Score

CVSS 3.0 9.8 Critical

Status

Modified - support@hackerone.com

Published

2018-05-29

Last modified

2024-09-16

Weaknesses

CWE-20, CWE-327

Affected products

• Jsonwebtoken (Auth0)
• Jsonwebtoken Node Module (Hackerone)

References

• https://auth0.com/blog/2015/03/31/critical-vulnerabilities-in-json-web-token-libraries/
• https://github.com/auth0/node-jsonwebtoken/commit/1bb584bc382295eeb7ee8c4452a673a77a68b687
• https://nodesecurity.io/advisories/17
• https://www.timmclean.net/2015/02/25/jwt-alg-none.html