CVE-2019-1000012: Hex

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

Hex package manager version 0.14.0 through 0.18.2 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 0.19.

Affected products

• Hex Hex: from 0.14.0, up to and including 0.18.2

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