CVE-2025-66512: Nextcloud Server is a self hosted personal cloud system. In Nextcloud Server and Server Enterprise prior to 31.0.12 and 32.0.3, a missing sanitization allowed…

PriorityP429medium6.1CVSS 3.1

AVNACLPRNUIRSCCLILAN

EPSS

0.23%

14.1th percentile

Nextcloud Server is a self hosted personal cloud system. In Nextcloud Server and Server Enterprise prior to 31.0.12 and 32.0.3, a missing sanitization allowed malicious users to circumvent the content security policy when a malicious user manages to trick a user it viewing an uploaded SVG outside of the Nextcloud Servers web page.

Affected

4 ranges

Vendor	Product	Version range	Fixed in
nextcloud	nextcloud_server	>= 31.0.0 < 31.0.12	31.0.12
nextcloud	nextcloud_server	>= 32.0.0 < 32.0.3	32.0.3
nextcloud	security-advisories	< 31.0.12	31.0.12
nextcloud	security-advisories	—	—

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