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CVE-2023-33404

CriticalPublished

An Unrestricted Upload vulnerability, due to insufficient validation on UploadControlled.cs file, in BlogEngine.Net version 3.3.8.0 and earlier allows...

Published: Jun 26, 2023
Updated: Dec 3, 2024
Assigning CNA: mitre
Evidence observed: Aug 8, 2026

Primary CVSS

9.8/ 10Critical

nvd · CVSS 3.1

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

EPSS probability estimate

25.8%

Moderate · next 30 days

Percentile: 97.9%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

An Unrestricted Upload vulnerability, due to insufficient validation on UploadControlled.cs file, in BlogEngine.Net version 3.3.8.0 and earlier allows remote attackers to execute remote code.

Sources

CVE-2023-33404PoC
Proof-of-concept exploit for CVE-2023-33404: authenticated file upload vulnerability in BlogEngine.NET CMS 3.3.8.0 and earlier, enabling remote code execution via hardcoded upload path.

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