PT-2026-50676 · Docker · Docker Sandboxes

Publicado 2026-06-18 · Atualizado 2026-06-18 · CVE-2026-12539

Mitre

CVSS v4.0

5.7

Média

Vetor base

AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Docker Sandboxes (sbx) blocks ICMP egress with an authorizer applied only at network-creation time, and does not re-apply it to networks rebuilt from disk when the Docker daemon restarts, so a restart-surviving sandbox forwards ICMP to arbitrary hosts. A workload inside a sandbox, which the threat model treats as untrusted, can therefore defeat the documented ICMP egress block to perform network reconnaissance and exfiltrate data over an ICMP covert channel, regardless of the configured allowlist.

Correção

Improper Initialization

Enumeração de Fraquezas

CWE-923

CWE-665

Identificadores relacionados

CVE-2026-12539

Produtos afetados

Docker Sandboxes

Referências · 3

• https://docs.docker.com/ai/sandboxes · Nota
• https://nvd.nist.gov/vuln/detail/CVE-2026-12539 · Nota de Segurança
• https://github.com/docker/sbx-releases/releases/tag/v0.33.0 · Nota