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.
Published: 2026-10-05
Score: 5.8 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

Vendor Workaround

Avoid using build sources from untrusted locations. Only builds enabling proxy networking for exec steps (either via BuildKitd TOML config or Buildx Rego policy) are affected.

Tracking

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Advisories

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History

Tue, 06 Oct 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 05 Oct 2026 23:45:00 +0000

Type Values Removed Values Added
First Time appeared Moby
Moby buildkit
Vendors & Products Moby
Moby buildkit

Mon, 05 Oct 2026 22:00:00 +0000

Type Values Removed Values Added
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.
Title BuildKit proxy CA cleanup can be disrupted by build steps
Weaknesses CWE-367
References
Metrics cvssV4_0

{'score': 5.8, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:L/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: Docker

Published:

Updated: 2026-10-06T13:27:23.994Z

Reserved: 2026-09-17T17:17:25.321Z

Link: CVE-2026-93315

cve-icon Vulnrichment

Updated: 2026-10-06T13:27:03.375Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-05T22:16:58.820

Modified: 2026-10-06T15:08:38.397

Link: CVE-2026-93315

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-06T00:15:05Z

Weaknesses
  • CWE-367

    Time-of-check Time-of-use (TOCTOU) Race Condition