# CVE-2026-93315: BuildKit proxy CA cleanup can be disrupted by build steps

> CVE-2026-93315: BuildKit proxy CA cleanup can be disrupted by build steps. CVSS 5.8 (CVSS 4.0).

Canonical: https://rewindex.com/cve/CVE-2026-93315
Last updated: 2026-10-06T15:08:38Z

- Published: 2026-10-05 21:57 UTC · Updated: 2026-10-06 15:08 UTC · Assigner: Docker
- CVSS: 5.8 (CVSS 4.0) · Severity: Medium
- EPSS: 0.10%, 1th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-367

## Description

When proxy networking with CA injection is enabled, a build can modify its CA bundle before cleanup. This may cause cleanup to block, operate outside the build rootfs, or fail without failing the build.

## 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-2026-93315)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-93315)
- [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-2f5p-x9ph-g97x](https://github.com/moby/buildkit/security/advisories/GHSA-2f5p-x9ph-g97x)

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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-2026-93315 · Markdown: https://rewindex.com/cve/CVE-2026-93315.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-93315 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:15:26.165Z