CVE-2026-105570: Docker Sandboxes

Medium severity, CVSS 6.7. EPSS: 0.1% chance of exploitation in the next 30 days.

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.

Affected products

• Docker Docker Sandboxes: from 0.21.0, before 0.47.0 (fixed in 0.47.0)

Published 2026-10-08. Last modified 2026-10-08.