GHSA-8v5f-hp78-jgxq – jwt-simple

Package

Manager: npm
Name: jwt-simple
Vulnerable Version: >=0 <0.5.3

Severity

Level: High

CVSS v3.1: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C

CVSS v4.0: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

EPSS: N/A pctlN/A

Details

Signature Verification Bypass in jwt-simple Versions of `jwt-simple` prior to 0.5.3 are vulnerable to Signature Verification Bypass. If no algorithm is specified in the `decode()` function, the packages uses the algorithm in the JWT to decode tokens. This allows an attacker to create a HS256 (symmetric algorithm) JWT with the server's public key as secret, and the package will verify it as HS256 instead of RS256 (asymmetric algorithm). ## Recommendation Upgrade to version 0.5.3 or later.

Metadata

Created: 2019-06-06T15:30:33Z
Modified: 2020-08-31T18:37:26Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2019/06/GHSA-8v5f-hp78-jgxq/GHSA-8v5f-hp78-jgxq.json
CWE IDs: ["CWE-347"]
Alternative ID: N/A
Finding: F163
Auto approve: 1