Medium [CVE-2026-105452] Docker Sandboxes could forward a client-supplied credential alongside a credential injected by the host egress proxy
This medium-severity Docker advisory covers CVE-2026-105452 affecting Docker Sandboxes.
Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.
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Summary
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.
- Docker Sandboxes 0.21.0 before 0.43.0
Official advisory · high-confidence parse· fetched 1 day ago·verify at source
Mitigation
Upgrade to a fixed release: 0.43.0. That is the remediation for this advisory.
The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.
Official advisory · high-confidence parse· fetched 1 day ago·verify at source
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