# CVE-2026-86120

## Summary

- **CVE ID:** CVE-2026-86120
- **Severity:** MEDIUM
- **CVSS Score:** 5.3 (CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N)
- **CWE:** CWE-636
- **Published:** Sep 5, 2026
- **Last Modified:** Sep 8, 2026

## 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.

## Affected Products

- apitable — apitable (0)

## References

- [CNA](https://github.com/apitable/apitable/issues/1814)
- [CNA](https://github.com/apitable/apitable/blob/88b24ce9f359/packages/room-server/src/fusion/middleware/guard/node.permission.guard.ts)
- [CNA](https://github.com/apitable/apitable)
- [CNA](https://www.vulncheck.com/advisories/apitable-through-1.13.0-beta.1-fail-open-authorization-in-the-fusion-api-node-permission-guard)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.21%
- **EPSS Percentile:** 11.7

---
_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._