TI-2020-09972 Aliases CVE-2020-12471 GHSA-f842-vw35-9x42

MonoX through 5.1.40.5152 allows remote code execution via HTML5Upload.ashx or…

MEDIUM 47CWE-502Published 2020-04-29 · Updated 2024-08-04

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-502.

Summary

MonoX through 5.1.40.5152 allows remote code execution via HTML5Upload.ashx or Pages/SocialNetworking/lng/en-US/PhotoGallery.aspx because of deserialization in ModuleGallery.HTML5Upload, ModuleGallery.SilverLightUploadModule, HTML5Upload, and SilverLightUploadHandler.

Why it matters now

EPSS 0.02764 86th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:mono:monox::::::::	up to 5.1.40.5152	Vulnerable	mono

cpe:2.3:a:mono:monox:*:*:*:*:*:*:*:* Versions up to 5.1.40.5152 Vulnerable ·mono

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2020-12471
2026-10-03 Alias added: GHSA-f842-vw35-9x42

References

Exploit 1

https://github.com/belong2yourself/vulnerabilities/tree/master/MonoX%20CMS/Remote%20Code%20Execution%20via%20Insecure%20Deserialization

TI-2020-09974 MonoX through 5.1.40.5152 allows admins to execute arbitrary programs by reconfiguring… CVSS 3.1HIGH 7.2
TI-2020-09971 MonoX through 5.1.40.5152 allows administrators to execute arbitrary code by modifying an ASPX template. CVSS 3.1HIGH 7.2
TI-2020-09973 MonoX through 5.1.40.5152 allows stored XSS via User Status, Blog Comments, or Blog Description. CVSS 3.1MEDIUM 5.4

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences