CVE-2019-1000013: Hex Core

High severity, CVSS 8.8. EPSS: 0.9% chance of exploitation in the next 30 days.

Hex package manager hex_core version 0.3.0 and earlier contains a Signing oracle vulnerability in Package registry verification that can result in Package modifications not detected, allowing code execution. This attack appears to be exploitable via victim fetches packages from malicious/compromised mirror. This vulnerability appears to have been fixed in 0.4.0.

Affected products

• Hex Hex Core: up to and including 0.3.0

Published 2019-02-04. Last modified 2026-06-17.