
Docker Sandboxes vulnerability lets AI agents access sensitive files outside their sandbox (CVE-2026-103916) | Endor Labs
CVE-2026-103916 is a symlink-following flaw in `sbx cp` in Docker Sandboxes that lets a sandboxed AI agent read or overwrite host files outside the approved workspace allowlist. The agent plants a symlink at a parent or destination path, and a later operator copy follows it. Write-up includes reproduction, CVSS 8.2 reasoning, and the fix in version 0.51.0 (3 November 2026) after an incomplete 0.48.0 patch.
AI Security, AppSec· Published and added 3 Nov 2026







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