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TI-2025-34601 Aliases CVE-2025-54867GHSA-j26p-6wx7-f3pw

Youki Symlink Following Vulnerability

Priority LOW 32CWE-61Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
High
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00194 9th percentileScored 2026-11-07
Fix Fixed youki (youki-dev): 0.5.5youki (crates.io): 0.5.5

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
youki-devyoukibefore 0.5.50.5.5Patch availableCNA
—youki (crates.io)before 0.5.50.5.5Patch availableGHSA-j26p-6wx7-f3pw
  • youki Vendoryouki-dev Affected before 0.5.5 Fixed in 0.5.5 Patch available CNA
  • youki (crates.io) Vendor— Affected before 0.5.5 Fixed in 0.5.5 Patch available GHSA-j26p-6wx7-f3pw

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:youki-dev:youki:*:*:*:*:*:*:*:*before 0.5.5Vulnerableyouki-dev
  • cpe:2.3:a:youki-dev:youki:*:*:*:*:*:*:*:* Versions before 0.5.5 Vulnerable ·youki-dev

Remediation

  • Fix · CNA youki (youki-dev) Fixed in 0.5.5
  • Fix · GHSA-j26p-6wx7-f3pw youki (crates.io) Fixed in 0.5.5 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-54867
  2. 2026-10-03 Alias added: GHSA-j26p-6wx7-f3pw

References

Patch 1

Advisory 2

Other 2

  • TI-2025-38811 youki container escape and denial of service due to arbitrary write gadgets and procfs write redirects CVSS 4.0HIGH 7.3
  • TI-2025-38482 youki container escape via "masked path" abuse due to mount race conditions CVSS 4.0HIGH 7.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences