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.
CVE-2025-62596
This critical-severity CVE scores 10.0 under NVD CVSS v3. EPSS exploit probability: 0.0%, top 85% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- High severity, but no confirmed exploitation yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 10.0
- EG Score
- 10.0(medium)
- EG Risk
- —
- EPSS
- 15.6%
- KEV
- Not listed
Published
November 6, 2025
Last Modified
June 17, 2026
Advisory Details (5)
Auto-updated Jul 16, 2026procfs package - github.com/cyphar/filepath-securejoin/pathrs-lite/procfs - Go Packages
https://pkg.go.dev/github.com/cyphar/filepath-securejoin/pathrs-lite/procfscontainer escape and denial of service due to arbitrary write gadgets and procfs write redirects · Advisory · youki-dev/youki · GitHub
https://github.com/youki-dev/youki/security/advisories/GHSA-vf95-55w6-qmrfcommit 5886c91073b9 (youki-dev/youki)
Fix landed in youki-dev/youki commit 5886c91073b9 — awaiting tagged release
https://github.com/youki-dev/youki/commit/5886c91073b9be748bd8d5aed49c4a820548030aAffected Packages
(1 across 1 ecosystem)
crates.io(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| youki | — | 0.5.7 | — |
Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 7× in last 7d / 42× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-22 14:08 UTCEPSS rescore
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- 2026-07-06 10:41 UTCOSV refresh
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- 2026-07-04 06:31 UTCEPSS rescore
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- 2026-06-19 19:25 UTCEPSS rescore
- 2026-06-19 19:25 UTCEPSS rescore
- 2026-06-17 22:35 UTCOSV refresh
- 2026-06-17 17:52 UTCEPSS rescore
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- 2026-06-15 17:48 UTCEPSS rescore
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- 2026-05-31 22:30 UTCEPSS rescore
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- 2026-05-31 00:16 UTCEPSS rescore
- 2026-05-31 00:16 UTCEPSS rescore
- 2026-05-29 19:43 UTCEG score recompute
- 2026-05-29 13:44 UTCEPSS rescore
Frequently asked(5)
What is CVE-2025-62596?
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Dependency Blast Radius
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