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TI-2026-55328 Aliases CVE-2026-79994GHSA-wq46-97v9-q386

Docker Sandboxes UDS forwarder can reach arbitrary host Unix sockets through a symlink race

Priority LOW 39CWE-367Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
Present
Impact type
—
Confidentiality · integrity · availability
High · High · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00139 3rd percentileScored 2026-11-07
Fix Fixed Docker Sandboxes (Docker): 0.42.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
DockerDocker Sandboxes0.37.0 to before 0.42.00.42.0Patch availableCNA
  • Docker Sandboxes VendorDocker Affected 0.37.0 to before 0.42.0 Fixed in 0.42.0 Patch available CNA

CPE names CNA · 1

CPEVersionsRoleVendor
cpe:2.3:a:docker:docker_sandboxes:*:*:*:*:*:*:*:*——Docker
  • cpe:2.3:a:docker:docker_sandboxes:*:*:*:*:*:*:*:* Versions — — ·Docker

Remediation

  • Fix · CNA Docker Sandboxes (Docker) Fixed in 0.42.0

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Docker Sandboxes 0.42.0

    2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2026-53903 Docker Sandboxes guest can write arbitrary macOS host files via a symlink in the virtio-fs stored-path fallbackPriority MEDIUM 42
    Show all 2 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-79994
  2. 2026-10-03 Alias added: GHSA-wq46-97v9-q386

References

Patch 2

Other 3

  • TI-2019-11833 Docker Desktop Community Edition before 2.1.0.1 allows local users to gain privileges by… KEVCVSS 3.1HIGH 7.8
  • TI-2019-04061 runc through 1.0-rc6, as used in Docker before 18.09.2 and other products, allows… CVSS 3.1HIGH 8.6
  • TI-2025-08316 Docker Desktop allows unauthenticated access to Docker Engine API from containers CVSS 4.0CRITICAL 9.3
  • TI-2025-02823 Elevation of Privilege in Docker Desktop for Windows during Upgrade due to Insecure Directory Deletion CVSS 4.0HIGH 7.3
  • TI-2026-14229 Tar extraction in moby/go-archive can write outside the destination directory via link following CVSS 4.0HIGH 7.1
  • TI-2023-21271 Docker Machine through 0.16.2 allows an attacker, who has control of a worker node, to… CVSS 3.1MEDIUM 6.5
See all 132 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences