Description
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.
References (4)
Core 4
Core References
Third Party Advisory x_refsource_confirm
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-jf3h-xf4q-mh89
Patch, Third Party Advisory x_refsource_misc
https://github.com/nextcloud/server/pull/30291
Exploit, Third Party Advisory x_refsource_misc
https://hackerone.com/reports/1261225
Third Party Advisory vendor-advisory
x_refsource_gentoo
https://security.gentoo.org/glsa/202208-17
Scores
CVSS v3
3.5
EPSS
0.0076
EPSS Percentile
73.6%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-770
CWE-400
Status
published
Products (2)
nextcloud/nextcloud_server
23.0.0
nextcloud/nextcloud_server
21.0.0 - 21.0.8
Published
Mar 09, 2022
Tracked Since
Feb 18, 2026