NanoCMS 0.4 - Remote Code Execution (RCE) (Authenticated) | Advisories

Advisories

NanoCMS 0.4 - Remote Code Execution (RCE) (Authenticated)

severity: high
date: January 13, 2026
Affecting: NanoCMS 0.4
CVE: CVE-2022-50898
CWE: CWE-94 Improper Control of Generation of Code ('Code Injection')
CVSS: 8.6
CVSS V4 Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
References: ExploitDB-50997
NanoCMS GitHub Repository
NanoCMS Exploit Archive
Credit: p1ckzi
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.