Description
Docker Sandboxes reuses existing state and configuration directories without verifying their ownership. If sbx or sandboxd is run as root with HOME or, on Linux, XDG_STATE_HOME pointing to an attacker-controlled location, a local unprivileged user can substitute control-plane sockets and configuration trusted by the root process, potentially executing commands as root. Exploitation requires a privileged invocation with an attacker-influenced environment. The issue affects Linux and macOS and is fixed in version 0.53.0.
Published: 2026-11-12
Score: 7.3 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

Vendor Solution

Upgrade Docker Sandboxes to version 0.53.0 or later.


Vendor Workaround

Avoid running sbx or sandboxd as root. If a privileged invocation is required, use HOME and XDG_STATE_HOME values belonging to the target account and ensure its state and configuration directories are not controlled by another user.

Tracking

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Advisories

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References
History

Thu, 12 Nov 2026 16:00:00 +0000

Type Values Removed Values Added
Description Docker Sandboxes reuses existing state and configuration directories without verifying their ownership. If sbx or sandboxd is run as root with HOME or, on Linux, XDG_STATE_HOME pointing to an attacker-controlled location, a local unprivileged user can substitute control-plane sockets and configuration trusted by the root process, potentially executing commands as root. Exploitation requires a privileged invocation with an attacker-influenced environment. The issue affects Linux and macOS and is fixed in version 0.53.0.
Title Docker Sandboxes privilege escalation through untrusted state directories
Weaknesses CWE-282
References
Metrics cvssV4_0

{'score': 7.3, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}


Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: Docker

Published:

Updated: 2026-11-12T15:50:44.926Z

Reserved: 2026-11-10T20:28:45.078Z

Link: CVE-2026-126329

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-11-12T16:19:04.663

Modified: 2026-11-12T16:19:04.663

Link: CVE-2026-126329

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses
  • CWE-282

    Improper Ownership Management