CVE-2026-79994

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

HIGH
8.7
CVSS Score
Published: September 15, 2026 at 08:33 PM UTC
Updated: September 16, 2026 at 08:54 PM UTC
1 product affected across 1 vendorDocker Sandboxes

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Severity
HIGH8.7
Exploit prediction
EPSS 0.1%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

0.37.0 ≤ v < 0.42.00.37.0
Affected range stops below 0.42.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.7HIGHDocker
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-367

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