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Vulnerability record · CVE-2022-50898 · published 13 January 2026

CVE-2022-50898: Kalyan02 nanocms unrestricted file upload vulnerability

KKalyan02 · Nanocms

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.

8.6 CVSS 4.0 High EPSS 1.3% · top 30.9% CWE-434 · Unrestricted file upload
8.6CVSS 4.0 base score
1.3%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
5References, 1 tagged exploit
17 Jun 2026Last modified by NVD

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.

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/ishell/Exploits-Archives/blob/master/2009-exploits/0904-exploits/nanocms-multi.txt Third Party Advisory
https://github.com/kalyan02/NanoCMS Product
https://www.exploit-db.com/exploits/50997 Exploit
https://www.vulncheck.com/advisories/nanocms-remote-code-execution-rce-authenticated Third Party Advisory
https://github.com/ishell/Exploits-Archives/blob/master/2009-exploits/0904-exploits/nanocms-multi.txt Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2022-50898), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.