CVE-2019-12798: Artifex Mujs

Critical severity, CVSS 9.8. EPSS: 1.7% chance of exploitation in the next 30 days.

An issue was discovered in Artifex MuJS 1.0.5. regcompx in regexp.c does not restrict regular expression program size, leading to an overflow of the parsed syntax list size.

Affected products

• Artifex Mujs: version 1.0.5 only

Published 2019-06-13. Last modified 2026-06-17.