Security Advisory

CVE-2025-66512

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2025-12-05 16:22:50

Last updated 2025-12-05 20:05:05

Assigner GitHub_M

State PUBLISHED

Description

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.

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