CVE-2025-62596 youki container escape and denial of service due to arbitrary write gadgets and procfs write redirects
Attackers can escape containers or cause denial of service via arbitrary writes to procfs due to insufficient path validation in youki.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2025-62596?
CVE-2025-62596 is a high-severity path traversal vulnerability in youki-dev youki, published on 5 Nov 2025. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
Youki is a container runtime written in Rust. In versions 0.5.6 and below, youki’s apparmor handling performs insufficiently strict write-target validation, and when combined with path substitution during pathname resolution, can allow writes to unintended procfs locations. While resolving a path component-by-component, a shared-mount race can substitute intermediate components and redirect the final target. This issue is fixed in version 0.5.7.
Which versions are affected by CVE-2025-62596?
2 open source packages ship an affected version, including youki. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
youki crates.io | All versions | 0.5.7 |
youki crates.io | All versions | 0.5.7 |
Products include Youki-Dev Youki.
How do I fix CVE-2025-62596?
Upgrade youki to 0.5.7 or later.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2025-62596 being exploited?
There is no known exploitation of CVE-2025-62596 in the wild and no public exploit code.
Other vulnerabilities in youki-dev youki
Sources
Also known as GHSA-vf95-55w6-qmrf.