DockerCVE-2026-18171
Docker Sandboxes: improper authorization
Medium5.7CVE-2026-18171 · Published Aug 12, 2026 · updated Aug 18, 2026
Docker Sandboxes (sbx) applies the read-only intent of a runtime host mount to the in-guest container bind only: the underlying virtio-fs host-edge grant is added to the sandbox's policy-share allowlist with no access mode. The directory stays writable at its shared-export path, so unprivileged code inside the sandbox can derive that path and write to a host directory the operator attached read-only.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| Docker Sandboxes Product | >= 0.35.0, <= 0.38.0 | No fix yet |
Details and references
- CVSS 4.0
- CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/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-863
More Docker advisories
All Docker| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Aug 18 | Docker CLI: link following | High7.1 | go-archive 0.3.0+4 more |
| 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 |
| Jul 21 | Docker BuildKit: path traversal | Low1.8 | 0.31.2 |
| Jul 20 | Docker BuildKit: link following | Medium5.6 | 0.31.2 |