Is CVE-2026-86120 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-86120?

CVE-2026-86120 has a CVSS v3 severity of MEDIUM (4.3).

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CVE-2026-86120

Description

APITable through 1.13.0-beta.1 contains an incorrect authorization vulnerability in NodePermissionGuard that fails to enforce node-level access control when permission lookups throw exceptions. Attackers with valid Fusion API tokens can write attachments to private datasheets they have been explicitly denied access to by exploiting the unhandled exception in the permission guard.