# CVE-2026-93320: BuildKit improperly handles special files in build snapshots

> CVE-2026-93320: BuildKit improperly handles special files in build snapshots. CVSS 6.0 (CVSS 4.0).

Canonical: https://rewindex.com/cve/CVE-2026-93320
Last updated: 2026-10-06T15:08:38Z

- Published: 2026-10-05 17:50 UTC · Updated: 2026-10-06 15:08 UTC · Assigner: Docker
- CVSS: 6.0 (CVSS 4.0) · Severity: Medium
- EPSS: 0.11%, 1th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-441

## Description

BuildKit may be tricked into performing file actions with special file inodes where regular files are expected. Special files may block operations or, on rootful workers, allow unintended host device access.

## Affected vendors and products

- moby: BuildKit

## Tracked companies

- [Docker](https://rewindex.com/company/docker.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-93320)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-93320)
- [https://github.com/moby/buildkit/releases/tag/v0.33.1](https://github.com/moby/buildkit/releases/tag/v0.33.1)
- [https://github.com/moby/buildkit/security/advisories/GHSA-9728-qjrv-2xh2](https://github.com/moby/buildkit/security/advisories/GHSA-9728-qjrv-2xh2)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-93320 · Markdown: https://rewindex.com/cve/CVE-2026-93320.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-93320 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:15:16.960Z