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 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 products
- Nextcloud Server, Nextcloud Enterprise Server, Red Os
- Nextcloud Nextcloud Server
- < 31.0.12, 32.0.3
- Fix
- Available
- CVSS 3.1
- 6.1 MEDIUM
- EPSS
- 0.3% (20th percentile)
- Weakness
- CWE-80, CWE-79
- NVD status
- Analyzed
- Published
- 2025-12-05
CVE-2025-66512 at NVD
No indexed exploits for CVE-2025-66512 yet
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No exploit for CVE-2025-66512 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.