VULNERABILITY INTELLIGENCE

CVE-2025-66512

CVSS score5.4 MEDIUM

EPSS probability0.28%

CISA KEVNot currently listed

Published2025-12-05

Last modified2026-10-18

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L

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.

Weakness classification

security-advisories@github.com: CWE-80
nvd@nist.gov: CWE-79

Primary references

security-advisories@github.com — Patch, Vendor Advisory
security-advisories@github.com — Patch
security-advisories@github.com — Issue Tracking
security-advisories@github.com — Issue Tracking, Vendor Advisory