CVE-2020-15692: Nim-Lang Nim

Critical severity, CVSS 9.8. EPSS: 4.2% chance of exploitation in the next 30 days.

In Nim 1.2.4, the standard library browsers mishandles the URL argument to browsers.openDefaultBrowser. This argument can be a local file path that will be opened in the default explorer. An attacker can pass one argument to the underlying open command to execute arbitrary registered system commands.

Affected products

• Nim-Lang Nim: up to and including 1.2.6

Published 2020-08-14. Last modified 2026-06-17.