What’s Vulnerable › Vulnerabilities

CVE-2022-41969: Nextcloud Server has no password length limit when creating a user as an administrator

• Severity: low (CVSS 2.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-12-01 · updated 2026-06-17
• Weakness: CWE-400

Description

Nextcloud Server is an open source personal cloud server. Prior to versions 23.0.11, 24.0.7, and 25.0.0, there is no password length limit when creating a user as an administrator. An administrator can cause a limited DoS attack against their own server. Versions 23.0.11, 24.0.7, and 25.0.0 contain a fix for the issue. As a workaround, don't create user accounts with long passwords.

Affected products

• Nextcloud Server: from 23.0.0 before 23.0.11; from 24.0.0 before 24.0.7 — fixed in 23.0.11, 24.0.7

How to fix

Upgrade to a fixed version: Nextcloud Server 23.0.11, 24.0.7. Check the vendor advisory for mitigations.

References

• https://github.com/nextcloud/security-advisories/security/advisories/GHSA-4gm7-j7wg-m4fx
• https://github.com/nextcloud/server/pull/34500
• https://hackerone.com/reports/1727424
• https://github.com/nextcloud/security-advisories/security/advisories/GHSA-4gm7-j7wg-m4fx
• https://github.com/nextcloud/server/pull/34500
• https://hackerone.com/reports/1727424

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