DockerCVE-2026-77179
Docker Sandboxes: code execution
Critical9.4CVE-2026-77179 · Published Sep 15, 2026 · updated Sep 16, 2026
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.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| Docker Sandboxes Product | >= 0.28.0, < 0.42.0 | 0.42.0 |
Details and references
- CVSS 4.0
- CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-59
More Docker advisories
All Docker| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Sep 15 | Docker Sandboxes: race condition | High8.7 | 0.42.0 |
| Aug 18 | Docker CLI: link following | High7.1 | go-archive 0.3.0+4 more |
| Aug 12 | Docker Sandboxes: improper authorization | Medium5.7 | No fix yet |
| Jul 21 | Docker BuildKit: improper input validation | Medium6.0 | 0.31.2 |
| Jul 21 | Docker BuildKit: argument injection | High7.3 | No fix yet |
| Jul 21 | Docker BuildKit: authentication bypass | Medium6.9 | 0.31.2 |