CVE-2025-47794 Nextcloud Server vulnerable to insecure temporary file creation, race with write access and permission
An attacker on a multi-user system can read temporary files or perform symlink attacks due to insecure file creation, leading to data exposure or privilege escalation.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-47794?
CVE-2025-47794 is a low-severity vulnerability in Nextcloud Nextcloud Server, published on 16 May 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Nextcloud Server is a self hosted personal cloud system. In Nextcloud Server prior to 29.0.13, 30.0.7, and 31.0.1 and Nextcloud Enterprise Server prior to 26.0.13.13, 27.1.11.13, 28.0.14.4, 29.0.13, 30.0.7, and 31.0.1, an attacker on a multi-user system may read temporary files from Nextcloud running with a different user account, or run a symlink attack. Nextcloud Server versions 29.0.13, 30.0.7, and 31.0.1 and Nextcloud Enterprise Server 26.0.13.13, 27.1.11.13, 28.0.14.4, 29.0.13, 30.0.7, and 31.0.1 fix the issue. No known workarounds are available.
Weakness: CWE-284
Which versions are affected by CVE-2025-47794?
It affects 1 product.
Products include Nextcloud Nextcloud Server.
How do I fix CVE-2025-47794?
No fix has been published for CVE-2025-47794 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-47794 being exploited?
There is no known exploitation of CVE-2025-47794 in the wild and no public exploit code.
Other vulnerabilities in Nextcloud Nextcloud Server
- CVE-2021-32802 Preview generation used third-party library not suited for user-generated content in Nextcloud server
- CVE-2023-26482 Scope of workflow operations is not validated in nextcloud server
- CVE-2018-3775 Auth bypass in Nextcloud Server
- CVE-2023-35172 Nextcloud Server password reset endpoint is not brute force protected
- CVE-2023-32320 Nextcloud Server's brute force protection allows someone to send more requests than intended
Sources
Also known as GHSA-q568-2933-gcjq.