TI-2020-17382 Aliases CVE-2020-28672 GHSA-pgm3-3759-c76g

MonoCMS Blog 1.0 is affected by incorrect access control that can lead to remote…

MEDIUM 46Published 2021-01-07 · Updated 2024-08-04

Key facts

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

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

MonoCMS Blog 1.0 is affected by incorrect access control that can lead to remote arbitrary code execution. At monofiles/category.php:27, user input can be saved to category/[foldername]/index.php causing RCE.

Why it matters now

EPSS 0.12144 96th 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:monocms:monocms:1.0:::::::*	1.0	Vulnerable	Monocms

cpe:2.3:a:monocms:monocms:1.0:*:*:*:*:*:*:* Versions 1.0 Vulnerable ·Monocms

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2020-28672
2026-10-03 Alias added: GHSA-pgm3-3759-c76g

References

Exploit 1

https://github.com/fortest-1/vuln/blob/main/MonoCMS%20Blog/MonoCMS%20Blog%201.0_remote_code_execution.md

TI-2024-10130 MonoCMS Posts Page opensaved.php cross site scripting CVSS 4.0MEDIUM 5.3
TI-2024-10129 MonoCMS Account Information Page account.php cross site scripting CVSS 4.0MEDIUM 5.3
TI-2020-15886 MonoCMS Blog 1.0 is affected by: Arbitrary File Deletion. CVSS 3.1HIGH 8.1
TI-2020-15888 MonoCMS Blog 1.0 stores hard-coded admin hashes in the log.xml file in the source files… CVSS 3.1HIGH 7.5
TI-2020-15887 A Cross Site Request Forgery (CSRF) vulnerability in MonoCMS Blog 1.0 allows attackers to change the password of a user. CVSS 3.1MEDIUM 6.5

Sources

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