CVE-2016-7037: Emarref Jwt

High severity, CVSS 7.5. EPSS: 0.7% chance of exploitation in the next 30 days.

The verify function in Encryption/Symmetric.php in Malcolm Fell jwt before 1.0.3 does not use a timing-safe function for hash comparison, which allows attackers to spoof signatures via a timing attack.

Affected products

• Emarref Jwt: up to and including 1.0.2

Published 2017-01-23. Last modified 2026-06-17.