CVE-2021-34426: Keybase

High severity, CVSS 7.8. EPSS: 0.2% chance of exploitation in the next 30 days.

A vulnerability was discovered in the Keybase Client for Windows before version 5.6.0 when a user executed the "keybase git lfs-config" command on the command-line. In versions prior to 5.6.0, a malicious actor with write access to a user\'s Git repository could leverage this vulnerability to potentially execute arbitrary Windows commands on a user\'s local system.

Affected products

• Keybase Keybase: before 5.6.0 (fixed in 5.6.0)

Published 2021-12-14. Last modified 2026-06-17.