CVE-2018-13347: Mercurial

Critical severity, CVSS 9.8. EPSS: 2.7% chance of exploitation in the next 30 days.

mpatch.c in Mercurial before 4.6.1 mishandles integer addition and subtraction, aka OVE-20180430-0002.

Affected products

• Mercurial Mercurial: before 4.6.1 (fixed in 4.6.1)

Published 2018-07-06. Last modified 2026-06-17.