CVE-2023-25820 - CVE House
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Status published Medium CVE-2023-25820

Nextcloud Server and Enterprise Server missing brute force protection on password confirmation modal

Vulnerability Description

Nextcloud Server is the file server software for Nextcloud, a self-hosted productivity platform, and Nextcloud Enterprise Server is the enterprise version of the file server software. In Nextcloud Server versions 25.0.x prior to 25.0.5 and versions 24.0.x prior to 24.0.10 as well as Nextcloud Enterprise Server versions 25.0.x prior to 25.0.4, 24.0.x prior to 24.0.10, 23.0.x prior to 23.0.12.5, 22.x prior to 22.2.0.10, and 21.x prior to 21.0.9.10, when an attacker gets access to an already logged in user session they can then brute force the password on the confirmation endpoint. Nextcloud Server should upgraded to 24.0.10 or 25.0.4 and Nextcloud Enterprise Server should upgraded to 21.0.9.10, 22.2.10.10, 23.0.12.5, 24.0.10, or 25.0.4 to receive a patch. No known workarounds are available.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

Affected Vendor

Affected Software

security-advisories
Vulnerable Versions:
Nextcloud Server >= 24.0.0, < 24.0.10, Nextcloud Server >= 25.0.0, < 25.0.4, Nextcloud Enterprise Server >= 25.0.0, < 25.0.4, Nextcloud Enterprise Server >= 24.0.0, < 24.0.10, Nextcloud Enterprise Server >= 23.0.0, < 23.0.12.5, Nextcloud Enterprise Server >= 22.0.0, < 22.2.10.10, Nextcloud Enterprise Server >= 21.0.0, < 21.0.9.10

Timeline

Official Publish: March 22nd, 2023
Last Modified: February 25th, 2025
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L

Weaknesses (CWE)