High severity8.8NVD Advisory· Published Dec 19, 2025· Updated Apr 15, 2026

CVE-2023-53956

Description

Flatnux 2021-03.25 contains an authenticated file upload vulnerability that allows administrative users to upload arbitrary PHP files through the file manager. Attackers with admin credentials can upload malicious PHP scripts to the web root directory, enabling remote code execution on the server.

Patches

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

flatnux.altervista.org/flatnux.htmlnvd
www.exploit-db.com/exploits/51295nvd
www.vulncheck.com/advisories/flatnux-authenticated-file-upload-remote-code-executionnvd

News mentions

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