CVE-2018-1000539: JSON-Jwt Project JSON-Jwt

Medium severity, CVSS 5.3. EPSS: 0.8% chance of exploitation in the next 30 days.

Nov json-jwt version >= 0.5.0 && < 1.9.4 contains a CWE-347: Improper Verification of Cryptographic Signature vulnerability in Decryption of AES-GCM encrypted JSON Web Tokens that can result in Attacker can forge a authentication tag. This attack appear to be exploitable via network connectivity. This vulnerability appears to have been fixed in 1.9.4 and later.

Affected products

• JSON-Jwt Project JSON-Jwt: from 0.5.0, before 1.9.4 (fixed in 1.9.4)

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