CVE-2026-79994: Docker Sandboxes UDS forwarder can reach arbitrary host Unix sockets through a symlink race
High · CVSS 8.7 (CVSS 4.0)EPSS 0.14%, 3th percentilePublished Updated Assigner: Docker
Description
The guest-to-host Unix-domain socket relay in Docker Sandboxes validates that a socket path is inside an authorized workspace, but later reconnects using the pathname. A malicious guest can replace an intermediate directory with a symlink between validation and connection, causing the host to connect to an arbitrary AF_UNIX socket outside the shared workspace. This can expose data or host-side capabilities provided by the targeted socket.
CWE-367
Tracked companies
Mapped from the CVE’s affected-product data, NVD CPE matches, vendor advisories or package feeds. A mapping means the vendor’s software is named, not that its hosted service was exposed.
Status incidents that name it
No tracked status incident names this CVE.
Affected vendors and products
Docker: Docker Sandboxes
References
- CVE record on cve.org (opens in new tab)
- NVD entry (opens in new tab)
- docs.docker.com/ai/sandboxes/ (opens in new tab)
- docs.docker.com/ai/sandboxes/security/isolation/ (opens in new tab)
- github.com/docker/sailor/pull/2021 (opens in new tab)
- github.com/docker/sandboxes/pull/5342 (opens in new tab)
- github.com/docker/sbx-releases/releases/tag/v0.42.0 (opens in new tab)
- CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (opens in new tab)
- This product uses data from the NVD API but is not endorsed or certified by the NVD. (opens in new tab)
- Known Exploited Vulnerabilities catalog from CISA. (opens in new tab)
- EPSS scores from FIRST (Exploit Prediction Scoring System). (opens in new tab)