CVE-2018-1000531: Inversoft Prime-Jwt

High severity, CVSS 7.5. EPSS: 1.7% chance of exploitation in the next 30 days.

inversoft prime-jwt version prior to commit abb0d479389a2509f939452a6767dc424bb5e6ba contains a CWE-20 vulnerability in JWTDecoder.decode that can result in an incorrect signature validation of a JWT token. This attack can be exploitable when an attacker crafts a JWT token with a valid header using 'none' as algorithm and a body to requests it be validated. This vulnerability was fixed after commit abb0d479389a2509f939452a6767dc424bb5e6ba.

Affected products

• Inversoft Prime-Jwt: up to and including 1.3.0

Published 2018-06-26. Last modified 2026-06-17.