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Vulnerability record · CVE-2025-62596 · published 6 November 2025

CVE-2025-62596: Youki-dev youki vulnerability

YYouki Dev · Youki

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.

7.3 CVSS 4.0 High EPSS 0.25% · top 85.4% CWE-61 · CWE-61CWE-363 · CWE-363
7.3CVSS 4.0 base score
0.25%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
5References
17 Jun 2026Last modified by NVD

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.

CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/youki-dev/youki/commit/5886c91073b9be748bd8d5aed49c4a820548030a Patch
https://github.com/youki-dev/youki/security/advisories/GHSA-vf95-55w6-qmrf Vendor Advisory
https://pkg.go.dev/github.com/cyphar/filepath-securejoin/pathrs-lite/procfs Not Applicable
https://youtu.be/tGseJW_uBB8 Not Applicable
https://youtu.be/y1PaBzxwRWQ Not Applicable

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Source: NIST National Vulnerability Database (record CVE-2025-62596), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.