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CVE-2025-47791— Nextcloud Server's test remote endpoint is not rate limited

Quick assessment

Affected
nextcloud security-advisories
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Nextcloud是德国Nextcloud公司的一套开源的自托管文件同步和共享的通信应用平台。 Nextcloud 28.0.13之前版本、29.0.10之前版本和30.0.3之前版本存在代码问题漏洞，该漏洞源于未正确保护共享接收者验证端点，可能导致代理请求到其他服务器。

CVSS 4.3 · Medium EPSS 0.36% · P30
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I. Basic Information for CVE-2025-47791

Vulnerability Information
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Vulnerability Title
Nextcloud Server's test remote endpoint is not rate limited
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
Nextcloud 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Nextcloud是德国Nextcloud公司的一套开源的自托管文件同步和共享的通信应用平台。 Nextcloud 28.0.13之前版本、29.0.10之前版本和30.0.3之前版本存在代码问题漏洞，该漏洞源于未正确保护共享接收者验证端点，可能导致代理请求到其他服务器。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
nextcloud security-advisories >= 28.0.0, < 28.0.13 -

II. Public POCs for CVE-2025-47791

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III. Intelligence Information for CVE-2025-47791

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Vendor Advisories for CVE-2025-47791 (1)

Same Patch Batch · nextcloud · 2025-05-16 · 5 CVEs total

CVE-2025-47790 6.4 MEDIUM Nextcloud Server doesn't request second factor after session timeout
CVE-2025-47792 5.0 MEDIUM Nextcloud Desktop 3rdparty applications can create share links via socket API
CVE-2025-47793 4.3 MEDIUM Nextcloud Server and Groupfolders app vulnerable to bypass of group folder quota limit usi
CVE-2025-47794 2.6 LOW Nextcloud Server vulnerable to insecure temporary file creation, race with write access an

IV. Related Vulnerabilities

Same product: security-advisories
Same vendor: nextcloud
Same weakness: CWE-918

V. Comments for CVE-2025-47791

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