Open Container Initiative umoci before 0.4.7 allows attackers to overwrite arbitrary host…
Priority LOW 25CWE-20Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub.
Summary
Open Container Initiative umoci before 0.4.7 allows attackers to overwrite arbitrary host paths via a crafted image that causes symlink traversal when "umoci unpack" or "umoci raw unpack" is used.
Why it matters now
EPSS 0.00344 28th percentileScored 2026-11-07
Fix Fixed github.com/opencontainers/umoci (Go): 0.4.7
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | github.com/opencontainers/umoci (Go) | before 0.4.7 | 0.4.7 | Patch available | GHSA-9m95-8hx6-7p9v |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- github.com/opencontainers/umoci (Go) Vendor— Affected before 0.4.7 Fixed in 0.4.7 Patch available GHSA-9m95-8hx6-7p9v
Remediation
- Fix · GHSA-9m95-8hx6-7p9v github.com/opencontainers/umoci (Go) Fixed in 0.4.7 Advisory →
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2021-29136
- 2026-10-03 Alias added: GHSA-9m95-8hx6-7p9v
References
Sources
- CVE-2021-29136 · CVE Program
- CVE-2021-29136 · NVD
- FIRST EPSS
- GHSA-9m95-8hx6-7p9v · GitHub Advisory Database · CC BY 4.0
- CVE-2021-29136 · Red Hat security data · CC BY 4.0
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