CVE-2026-95838containerd: Unpack DoS via repeated opaque whiteouts
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No exploitation reported and no EPSS estimate yet.
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containerd is an open-source container runtime. Prior to 1.7.35, 2.0.12, 2.2.8, and 2.3.5, containerd's layer unpack handler repeatedly traverses directories for certain opaque whiteout configurations. A malicious image layer can trigger repeated directory traversals while opaque whiteouts are processed. Pulling or importing the image can consume CPU, delay container startup, and reduce image-pull concurrency for unrelated deployments. This issue is fixed in versions 1.7.35, 2.0.12, 2.2.8, and 2.3.5.
- CVSS
- 4.6 MEDIUM (v4.0, CNA)CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
- Weakness (CWE)
- CWE-400, CWE-407
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Awaiting Analysis
- Record last updated
- Oct 13, 2026
- First seen by InfoSec Signals
- Oct 12, 2026
Affected products
containerd containerd containerd:containerd (from the name) | before 1.7.35; from 2.0.0-beta.0, < 2.0.12; from 2.2.0, < 2.2.8; from 2.3.0, < 2.3.5 | CNA record |
References
- https://github.com/containerd/containerd/security/advisories/GHSA-rp3h-jf77-q9p4x-refsource-confirm
- https://github.com/containerd/containerd/commit/e6ca378dcfa610d06589a3ac96aa992de866e4f0x-refsource-misc
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.