---
id: CVE-2026-77169
title: >-
  A vulnerability in the team folders (formerly group folders) app when used in
  combination with the workspace app allowed API/REST-only delegated
  administrators to bypass folder-level authorization controls
summary: >-
  A vulnerability in the team folders (formerly group folders) app when used in
  combination with the workspace app allowed API/REST-only delegated
  administrators to bypass folder-level authorization controls. The workspace
  app enables orga…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N'
cwe:
  - CWE-284
vendor: Nextcloud
product: Team Folders
affected:
  - team_folders >= 13.0.0 < 22.0.0
published: '2026-09-18'
updated: '2026-09-18'
sourceUpdated: '2026-09-18T20:17:22.383'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-77169'
references:
  - url: 'https://hackerone.com/reports/3674940'
    label: support@hackerone.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-18T19:42:21.795020Z'
epss: 0.00469
epssPercentile: 0.37905
ingestedAt: '2026-09-18T01:33:24.272Z'
---

## Overview

A vulnerability in the team folders (formerly group folders) app when used in combination with the workspace app allowed API/REST-only delegated administrators to bypass folder-level authorization controls. The workspace app enables organizations to delegate limited administrative privileges for team folder management via API/REST only, restricting access to folders for which the admin has advanced permissions.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.