CVE-2023-28847

Nextcloud Server is the file server software for Nextcloud, a self-hosted productivity platform. In Nextcloud Server 24.0.0 prior to 24.0.11 and 25.0.0 prior to 25.0.5; as well as Nextcloud Server Enterprise 23.0.0 prior to 23.0.12.6, 24.0.0 prior to 24.0.11, and 25.0.0 prior to 25.0.5; an attacker is not restricted in verifying passwords of share links so they can just start brute forcing the password. Nextcloud Server 24.0.11 and 25.0.5 and Nextcloud Enterprise Server 23.0.12.6, 24.0.11, and 25.0.5 contain a fix for this issue. No known workarounds are available.

• CWE-307

• https://github.com/nextcloud/security-advisories/security/advisories/GHSA-r5wf-xj97-3w7wVendor Advisory
• https://github.com/nextcloud/server/pull/35057Issue Tracking, Patch
• https://hackerone.com/reports/1894653Exploit, Issue Tracking, Third Party Advisory
• https://github.com/nextcloud/security-advisories/security/advisories/GHSA-r5wf-xj97-3w7wVendor Advisory
• https://github.com/nextcloud/server/pull/35057Issue Tracking, Patch
• https://hackerone.com/reports/1894653Exploit, Issue Tracking, Third Party Advisory

Published

Apr 25, 2023

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
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