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.
Published: 2026-09-21
Score: 6.5 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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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'}

Subscriptions

Nextcloud Server
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 : Received

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

Modified: 2026-09-21T19:17:10.713

Link: CVE-2026-77165

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

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

Weaknesses