CVE-2022-50898

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 v4.0

8.6 HIGHCVSS: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

CVSS v3.1

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

EPSS

1.18% chance of exploitation in the next 30 days, 66th percentile

Published

2026-01-13

Updated

2026-01-29

Proof-of-concept exploits (2)

• https://www.exploit-db.com/exploits/50997
• ishell/Exploits-Archives/blob/master/2009-exploits/0904-exploits/nanocms-multi.txt

References

• CVE Record
• NVD entry

Related

• CVE-2022-50897
• CVE-2022-50899
• CVE-2022-50896
• CVE-2022-50900
• CVE-2022-50895
• CVE-2022-50901