CVE-2026-77179: CWE-59: Improper Link Resolution Before File Access ('Link Following') in Docker Docker Sandboxes
On macOS, the virtio-fs host server used by Docker Sandboxes improperly follows symlinks when reopening an unlinked file from a stored path. A malicious guest can replace a parent directory with a symlink, escape the shared workspace, and read or modify arbitrary host files as the VMM user, potentially achieving host code execution.
CVE-2026-77179: CWE-59: Improper Link Resolution Before File Access ('Link Following') in Docker Docker Sandboxes
Description
On macOS, the virtio-fs host server used by Docker Sandboxes improperly follows symlinks when reopening an unlinked file from a stored path. A malicious guest can replace a parent directory with a symlink, escape the shared workspace, and read or modify arbitrary host files as the VMM user, potentially achieving host code execution.
CVSS v4.0
Score 9.4critical
Affected software
Docker
Docker Sandboxes
cpe:2.3:a:docker:docker_sandboxes:*:*:*:*:*:*:*:*Weaknesses
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Docker
- Date Reserved
- 2026-08-20T15:32:02.935Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6aa94c8655bf5e2cf5e43601
Added to database: 09/15/2026, 13:47:50 UTC
Last updated: 09/15/2026, 13:47:50 UTC
Views: 1
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