Description
After guessing a 62^15 complex unique identifier, a malicious logged in user was able to retrieve a list of memberships for a circle they are not a member of.
Published: 2026-09-18
Score: 3.1 Low
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

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Advisories

No advisories yet.

References
Link Providers
https://hackerone.com/reports/3484601 cve-icon cve-icon
History

Fri, 18 Sep 2026 11:15:00 +0000

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

Fri, 18 Sep 2026 01:45:00 +0000

Type Values Removed Values Added
Description After guessing a 62^15 complex unique identifier, a malicious logged in user was able to retrieve a list of memberships for a circle they are not a member of.
Weaknesses CWE-639
References
Metrics cvssV3_0

{'score': 3.1, 'vector': 'CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N'}

Subscriptions

Nextcloud Server
cve-icon MITRE

Status: PUBLISHED

Assigner: hackerone

Published:

Updated: 2026-09-18T01:26:04.654Z

Reserved: 2026-07-30T15:00:00.609Z

Link: CVE-2026-68493

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-18T02:17:07.350

Modified: 2026-09-18T02:17:07.350

Link: CVE-2026-68493

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-18T11:00:08Z

Weaknesses
  • CWE-639

    Authorization Bypass Through User-Controlled Key