CVE-2026-105452

Docker Sandboxes egress proxy could forward unrecognized client credentials to managed hosts

Published Oct 8, 2026 CVSS 4.0 · 5.9 Medium EPSS < 1% KEV · Not listed
Description
Docker Sandboxes could forward a client-supplied credential alongside a credential injected by the host egress proxy. The proxy removed alternate credentials only when their values matched known sentinel values, so untrusted code in an authorized sandbox could supply an unrecognized credential in another supported authentication header. For affected upstream services, this could authenticate the request to an attacker-controlled account and expose data included in the request.

Remediation

Vendor Solution

Upgrade to Docker Sandboxes 0.43.0 or later.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

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

Type Values Removed Values Added
Description Docker Sandboxes could forward a client-supplied credential alongside a credential injected by the host egress proxy. The proxy removed alternate credentials only when their values matched known sentinel values, so untrusted code in an authorized sandbox could supply an unrecognized credential in another supported authentication header. For affected upstream services, this could authenticate the request to an attacker-controlled account and expose data included in the request.
Title Docker Sandboxes egress proxy could forward unrecognized client credentials to managed hosts
First Time appeared Docker
Docker docker Sandboxes
Weaknesses CWE-200
CPEs cpe:2.3:a:docker:docker_sandboxes:*:*:*:*:*:*:*:*
Vendors & Products Docker
Docker docker Sandboxes
References
Metrics cvssV4_0

{'score': 5.9, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Docker
Published
Updated
Oct 8, 2026, 7:29 PM
Reserved
Oct 5, 2026, 1:55 PM
Status
Awaiting Analysis
Published
Oct 8, 2026, 7:16 PM
Modified
Oct 8, 2026, 8:46 PM