CVE-2026-105570 Docker Sandboxes OAuth response masking could be bypassed with a case-variant token host
Attackers can bypass credential masking in Docker Sandboxes by using case-variant hostnames, exposing OAuth tokens to untrusted code.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-105570?
CVE-2026-105570 is a medium-severity vulnerability in Docker Sandboxes, published on 8 Oct 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-178
Which versions are affected by CVE-2026-105570?
How do I fix CVE-2026-105570?
No fix has been published for CVE-2026-105570 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-105570 being exploited?
There is no known exploitation of CVE-2026-105570 in the wild and no public exploit code.
Sources
Also known as GHSA-q97m-w2f6-gjc6.