CVE-2026-101998 Fail-open response masking in Docker Sandboxes can expose proxy-managed credentials
Code in authorized Docker Sandboxes can recover host-managed OAuth tokens and API keys due to fail-open credential masking in proxy responses.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-101998?
CVE-2026-101998 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, with no action from the victim.
Official description
Docker Sandboxes could fail open while masking credentials in protected proxy responses. When a response-body read returned data together with an error, affected handlers could forward unmasked bytes. Code inside an authorized sandbox could use this to recover host-managed OAuth access and refresh tokens or a derived Anthropic API key intended to remain outside the sandbox.
Weakness: CWE-636
Which versions are affected by CVE-2026-101998?
How do I fix CVE-2026-101998?
No fix has been published for CVE-2026-101998 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-101998 being exploited?
There is no known exploitation of CVE-2026-101998 in the wild and no public exploit code.
Sources
Also known as GHSA-cc8x-7cv4-34m9.