CVE-2022-24741: Nextcloud Server

Medium severity, CVSS 6.5. EPSS: 1.6% chance of exploitation in the next 30 days.

Nextcloud server is an open source, self hosted cloud style services platform. In affected versions an attacker can cause a denial of service by uploading specially crafted files which will cause the server to allocate too much memory / CPU. It is recommended that the Nextcloud Server is upgraded to 21.0.8 , 22.2.4 or 23.0.1. Users unable to upgrade should disable preview generation with the `'enable_previews'` config flag.

Affected products

• Nextcloud Nextcloud Server: from 21.0.0, before 21.0.8 (fixed in 21.0.8); from 22.0.0, before 22.2.4 (fixed in 22.2.4); version 23.0.0 only

Published 2022-03-09. Last modified 2026-06-17.