CVE-2026-101998

Fail-open response masking in Docker Sandboxes can expose proxy-managed credentials

MEDIUM
5.9
CVSS Score
Published: October 8, 2026 at 06:47 PM UTC
Updated: October 8, 2026 at 08:46 PM UTC
2 products affected across 1 vendorDocker SandboxesDocker Sandboxes

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Severity
MEDIUM5.9
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

0.21.0 ≤ v < 0.47.00.21.0

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.9MEDIUMDocker
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-636

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