File owners were unable to unlock TYPE_TOKEN locks placed by other users, leaving files permanently locked with no recovery path outside of the database.

No CVSS v4.0

No CVSS v3.1

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00254.

Exploitation poc

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Nextcloud Server unaffected
Version Status Constraints
32.0.0 affected ≤ 34.0.0

No data.

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

Vendors Products
Nextcloud Subscribe
Server Subscribe

Project Subscriptions

Vendors Products
Nextcloud Subscribe
Server Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://hackerone.com/reports/3770482 cve-icon cve-icon cve-icon
History

Mon, 21 Sep 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Mon, 21 Sep 2026 18:00:00 +0000

Type Values Removed Values Added
First Time appeared Nextcloud
Nextcloud server
Vendors & Products Nextcloud
Nextcloud server

Mon, 21 Sep 2026 16:45:00 +0000

Type Values Removed Values Added
Title Permanent File Locks due to Improper Access Control in Nextcloud Server

Mon, 21 Sep 2026 15:30:00 +0000

Type Values Removed Values Added
Description File owners were unable to unlock TYPE_TOKEN locks placed by other users, leaving files permanently locked with no recovery path outside of the database.
Weaknesses CWE-284
References
Metrics cvssV3_0

{'score': 6.5, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: hackerone

Published:

Updated: 2026-09-21T18:44:22.324Z

Reserved: 2026-08-20T15:00:00.606Z

Link: CVE-2026-77165

cve-icon Vulnrichment

Updated: 2026-09-21T18:44:16.763Z

cve-icon NVD

Status : Deferred

Published: 2026-09-21T16:17:23.863

Modified: 2026-09-22T20:00:03.713

Link: CVE-2026-77165

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-21T17:45:17Z

Weaknesses