CVE-2026-105570

Docker Sandboxes OAuth response masking could be bypassed with a case-variant token host

State: Published
Severity: 6.7 Medium
Published: Oct 8, 2026
Updated: Oct 8, 2026
Reserved: Oct 5, 2026

Description

Docker Sandboxes compared OAuth token-endpoint hostnames case-sensitively when deciding whether to mask managed credential responses, while request routing treated DNS hostnames case-insensitively. Untrusted code inside a sandbox could use a case-variant hostname to reach the genuine provider endpoint while bypassing response masking. If a user completed the OAuth flow, the provider's access and refresh tokens could be returned unmasked to the sandbox, exposing host-managed credentials.

Scores

CVSS	Score	Vector	Source
4.0	6.7 Medium	CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N	Docker

Weaknesses

CWE-178 Improper Handling of Case Sensitivity

Affected Products

Product	Versions
Docker SandboxesDocker	0.21.0 to before 0.47.0Affected

References

https://docs.docker.com/ai/sandboxes/product
https://docs.docker.com/ai/sandboxes/configuration/credentials/#how-credential-injection-workstechnical-description

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