SSRF in Nextcloud Server
CVE-2025-47791
Nextcloud Server is a self hosted personal cloud system. In Nextcloud Server prior to 28.0.13, 29.0.10, and 30.0.3 and Nextcloud Enterprise Server prior to 28.0.13, 29.0.10, and 30.0.3, a currently unused endpoint to verify a share recipient was not protected correctly, allowing to proxy requests to another server. The endpoint was removed in Nextcloud Server 28.0.13, 29.0.10, and 30.0.3 and Nextcloud Enterprise Server 28.0.13, 29.0.10, and 30.0.3. No known workarounds are available.
Vulnerability class: SSRF (Server-Side Request Forgery)
EPSS: 0.003 (23.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
Affected products
- Nextcloud Nextcloud_server
- Nextcloud Security-advisories — versions >= 28.0.0, < 28.0.13, >= 29.0.0, < 29.0.10, >= 30.0.0, < 30.0.3
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Patch, Third Party Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
Frequently asked questions
- What is CVE-2025-47791?
- CVE-2025-47791 is a medium-severity vulnerability in Nextcloud Server, classified under Server-Side Request Forgery (SSRF). CVSS score: 4.3/10. Published 2025-05-16.
- How severe is CVE-2025-47791?
- Medium severity. CVSS v3 base score is 4.3 out of 10.