Beam-cloud

CVE-2026-120307: The Beta9 worker serves the sandbox file API from outside the container. getHostPathFromContainerPath turns the tenant's container path into a worker path. If t

CVE-2026-120307 Nov 1, 2026 Source: Vendor

The Beta9 worker serves the sandbox file API from outside the container. getHostPathFromContainerPath turns the tenant's container path into a worker path. If the unresolved path starts with a mount destination, including the default upload mount at /tmp/.beta9, the remainder is joined onto that mount's source with filepath.Join, which cleans parent-directory segments after the prefix check. A long enough run of those segments names any absolute path on the worker. A path that matches no mount i

Source of record The credited names below are quoted verbatim from the vendor's own advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-120307

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CVE-2026-120307 BR2026-0000-041026 unclaimed

Credited as Natan Nehorai