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VulnerabilityPublished

CVE-2026-103916: Docker Sandboxes · Link Following

Affects Docker SandboxesSource CVE Database V5

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Not known to be exploited · CVSS 8.4 High : upgrade to 0.51.0 soon.

Data as of 3 Nov 2026, 16:43 UTC

CVSS 4.0 base score
8.4High
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (Docker)CVSS 4.08.4
Patch
Available – fixed in 0.51.0
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 3 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 3 Nov 2026.

What to do

Upgrade Docker Sandboxes to 0.51.0.

Affected software

ProductAffectedFixed in
DockerDocker SandboxesAffected
  • >=0.28.0 <0.51.0
Fixed in
  • 0.51.0

CPE configurations (1)

  • cpe:2.3:a:docker:docker_sandboxes:*:*:*:*:*:*:*:*

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Upgrade Docker Sandboxes to version 0.51.0 or later, where this vulnerability has been fixed. No other mitigation steps are indicated by the vendor advisory.

Description

CVE-2026-103916 is a high-severity vulnerability in Docker Sandboxes affecting versions from 0.28.0 up to but not including 0.51.0. The issue involves unsafe handling of host-side paths in the sbx cp command, allowing a malicious sandbox to manipulate symlinks in the shared workspace. This can lead to reading or writing files outside the intended workspace with the invoking user's permissions.

References

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