CVE-2022-50898 NanoCMS 0.4 - Remote Code Execution (RCE) (Authenticated)
Authenticated attackers can upload malicious PHP files to NanoCMS to achieve remote code execution on the server.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2022-50898?
CVE-2022-50898 is a high-severity vulnerability in kalyan02 NanoCMS, published on 13 Jan 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
NanoCMS 0.4 contains an authenticated file upload vulnerability that allows remote code execution through unvalidated page content creation. Authenticated attackers can upload PHP files with arbitrary code to the server's pages directory by exploiting the page creation mechanism without proper input sanitization.
Weakness: CWE-434
Which versions are affected by CVE-2022-50898?
It affects 1 product.
Products include Kalyan02 Nanocms.
How do I fix CVE-2022-50898?
No fix has been published for CVE-2022-50898 yet. Limit exposure of the affected software until one is available.
Is CVE-2022-50898 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-50898 exists.
Other vulnerabilities in kalyan02 NanoCMS
Sources
Also known as GHSA-534f-4cxm-43gw.