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CVE-2015-9235

Critical

Description

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).

SeverityCritical
CVSS9.8
Exploit probability—
ProductAuth0 Jsonwebtoken
PublishedMay 29, 2018
First seenMay 29, 2018
Weakness typeCWE-20Improper input validation

How to fix

Update
  • auth0 jsonwebtoken4.2.2 or later
  • jsonwebtoken4.2.2 or later

Affected products

ProductAffected versionsFixed in
auth0 jsonwebtokenv < 4.2.24.2.2
jsonwebtokennpmv < 4.2.24.2.2

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