Vulnerability · CVE-2022-50898
NanoCMS 0.4 contains an authenticated file upload vulnerability that allows remote code execution through unvalidated page content creation.
Published Jan 13, 2026 · catalog updated Jan 29, 2026 · NanoCMS
Last checked Nov 5, 2026. A connected source was read within the last 7 days.
Check if you run it
No confirmed exploitation is on record for CVE-2022-50898. EPSS is 1.32%. Act only if a listed version of NanoCMS is installed.
Gaps on this record
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
Same product and reporting
- CVE-2026-1978 · Medium
- Severity
- High8.6
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 1.32%
- Remediation
- Vendor / distro source
- Affected products
- vendor kalyan02 NanoCMS 0.4
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.
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.
- vendor kalyan02 NanoCMS 0.40.4
How to fix CVE-2022-50898
No stored fix
No vendor fix text is stored. Use the linked advisory before you change production.
Version check
Seen in 0.4
Advisory
Open the cve_org record and follow its fix.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
No confirmed exploitation is on record for CVE-2022-50898. EPSS is 1.32%. Act only if a listed version of NanoCMS is installed.
Which versions are affected?
Compare what you have installed with kalyan02 NanoCMS 0.4 0.4. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
No weakness class is stored. EPSS 1.32%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Code
The project this record applies to. Exploit listings stay in References.
Timeline
Detection, updates, and resolution for this record.
Jan 13, 2026 · EUVD
Detected
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.
Jan 29, 2026 · EUVD
Updated
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.
Sources
- CVE.orgVulnerability recordCVE-2022-50898
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2022-50898
30-day exploitation probability 1.32%
first.org - EUVDVulnerability recordEUVD-2026-2648
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
euvd.enisa.europa.eu
References
Freshness
Last verified in this catalog Nov 5, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.
- FIRST EPSSNov 5, 2026
- CVE.orgOct 30, 2026
- EUVDOct 30, 2026