PT-2025-21657 · Nextcloud+1 · Nextcloud Server+2

Nickvergessen · Published 2025-05-16 · Updated 2025-09-19 · CVE-2025-47791

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Name of the Vulnerable Software and Affected Versions: Nextcloud Server versions prior to 28.0.13 Nextcloud Server versions prior to 29.0.10 Nextcloud Server versions prior to 30.0.3 Nextcloud Enterprise Server versions prior to 28.0.13 Nextcloud Enterprise Server versions prior to 29.0.10 Nextcloud Enterprise Server versions prior to 30.0.3

Description: Nextcloud Server is a self-hosted personal cloud system. A currently unused endpoint to verify a share recipient was not protected correctly, allowing proxy requests to another server. No known workarounds are available.

Recommendations: For Nextcloud Server versions prior to 28.0.13, update to version 28.0.13 or later. For Nextcloud Server versions prior to 29.0.10, update to version 29.0.10 or later. For Nextcloud Server versions prior to 30.0.3, update to version 30.0.3 or later. For Nextcloud Enterprise Server versions prior to 28.0.13, update to version 28.0.13 or later. For Nextcloud Enterprise Server versions prior to 29.0.10, update to version 29.0.10 or later. For Nextcloud Enterprise Server versions prior to 30.0.3, update to version 30.0.3 or later.

Exploit

Fix

SSRF

Weakness Enumeration

CWE-918

Related Identifiers

BDU:2025-07168

CVE-2025-47791

GHSA-C7VQ-M7F8-RX37

Affected Products

Nextcloud Enterprise Server

Nextcloud Server

Red Os

References · 12

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/47xxx/CVE-2025-47791.json · Exploit
• https://github.com/nextcloud/server/pull/49558 · Patch
• https://github.com/nextcloud/security-advisories/security/advisories/GHSA-c7vq-m7f8-rx37 · Patch
• https://bdu.fstec.ru/vul/2025-07168 · Security Note
• http://repo.red-soft.ru/redos/7.3c/x86_64/updates · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-47791 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-47791 · Security Note
• https://twitter.com/CVEnew/status/1923434468637016256 · Twitter Post
• https://redos.red-soft.ru/support/secure/uyazvimosti/support/secure/uyazvimosti/mnozhestvennye-uyazvimosti-nextcloud-cve-2025-47793-cve-2025-47791 · Note
• https://t.me/cveNotify/135977 · Telegram Post
• https://t.me/cvenotify/122907 · Telegram Post
• https://t.me/cvenotify/122583 · Telegram Post