CVE-2025-54867 Youki Symlink Following Vulnerability
Attackers can exploit symbolic links in the rootfs to access the host filesystem, leading to privilege escalation and data exposure.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-54867?
CVE-2025-54867 is a high-severity path traversal vulnerability in youki-dev youki, published on 14 Aug 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
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.
Weakness: CWE-61
Which versions are affected by CVE-2025-54867?
2 open source packages ship an affected version, including youki. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
youki crates.io | All versions | 0.5.5 |
youki crates.io | All versions | 0.5.5 |
Products include Youki-Dev Youki.
How do I fix CVE-2025-54867?
Upgrade youki to 0.5.5 or later.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2025-54867 being exploited?
There is no known exploitation of CVE-2025-54867 in the wild and no public exploit code.
Other vulnerabilities in youki-dev youki
Sources
Also known as GHSA-j26p-6wx7-f3pw.