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VulnerabilityPublished

CVE-2026-126330: Docker Sandboxes · Operation on a Resource after Expiration or Release

Affects Docker SandboxesSource CVE Database V5

0
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Not known to be exploited · CVSS 2.4 Low : upgrade to 0.53.0 when convenient.

Data as of 12 Nov 2026, 16:07 UTC

CVSS 4.0 base score
2.4Low
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (Docker)CVSS 4.02.4
Patch
Available – fixed in 0.53.0
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 12 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 12 Nov 2026.

What to do

Upgrade Docker Sandboxes to 0.53.0.

Affected software

ProductAffectedFixed in
DockerDocker SandboxesAffected
  • >=0.34.0 <0.53.0
Fixed in
  • 0.53.0

AI-suggested

Upgrade Docker Sandboxes to version 0.53.0 or later, where this issue is fixed. No other mitigation is required as the vulnerability is resolved in this official fix.

Description

CVE-2026-126330 is a vulnerability in Docker Sandboxes where the daemon can silently republish a sandbox service after its host-port mapping is removed. Although the active binding is removed, the original publication request remains, allowing the service to be published again on a new host port after a port change or sandbox restart. This affects both TCP and UDP mappings and is limited to the original bind address, which defaults to loopback. The issue is fixed in Docker Sandboxes version 0.53.0.

References

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