CVE-2025-54867: Youki-Dev Youki

High severity, CVSS 7.0. EPSS: 0.2% chance of exploitation in the next 30 days.

Youki is a container runtime written in Rust. Prior to version 0.5.5, if /proc and /sys in the rootfs are symbolic links, they can potentially be exploited to gain access to the host root filesystem. This issue has been patched in version 0.5.5.

Affected products

• Youki-Dev Youki: before 0.5.5 (fixed in 0.5.5)

Published 2025-08-14. Last modified 2026-06-17.