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VulnerabilityPublished

CVE-2026-126330: Docker Sandboxes can silently republish a sandbox service after an operator removes its

Source GCVE Database

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Authoritative record:CVE-2026-126330· Low 2.4

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

Data as of 12 Nov 2026, 19:19 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

Description

Docker Sandboxes can silently republish a sandbox service after an operator removes its automatically assigned host-port mapping. The daemon removes the active binding but retains the original publication request, allowing a later port change or sandbox restart to publish the service again on a new host port. An attacker able to reach the restored endpoint may regain access to the service. Both TCP and UDP mappings are affected. Exposure is limited to the original bind address, which defaults to loopback. The issue is fixed in version 0.53.0.

References

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