CVE-2022-50898

Name: CVE-2022-50898
Creator: NVD / NIST
Published: 2026-01-13T23:15:51.833+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.6/10EPSS 1.11%

Last modified Jun 17, 2026

CVE-2022-50898 is a high-severity vulnerability rated 8.6/10 on the CVSS scale. 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.. EPSS estimates a 1.11% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS 4.0

8.6/10

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:X/V:X/RE:X/U:X

EPSS Probability

1.11%

61.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Kalyan02	Nanocms	0.4

References

https://github.com/ishell/Exploits-Archives/blob/master/2009-exploits/0904-exploits/nanocms-multi.txtThird Party Advisory
https://github.com/kalyan02/NanoCMSProduct
https://www.exploit-db.com/exploits/50997Exploit
https://www.vulncheck.com/advisories/nanocms-remote-code-execution-rce-authenticatedThird Party Advisory
https://github.com/ishell/Exploits-Archives/blob/master/2009-exploits/0904-exploits/nanocms-multi.txtThird Party Advisory

Timeline

Published: Jan 13, 2026
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-50898?

How severe is CVE-2022-50898?

CVE-2022-50898 has a CVSS score of 8.6/10 (HIGH severity). The EPSS model estimates a 1.11% probability of exploitation in the next 30 days.

How do I fix CVE-2022-50898?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-50898?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST