Read the docs
TI-2020-14490 Aliases CVE-2020-23219GHSA-r99v-5qp5-2g28

Monstra CMS 3.0.4 allows attackers to execute arbitrary code via a crafted payload…

Priority MEDIUM 41CWE-94Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
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-94.

Summary

Monstra CMS 3.0.4 allows attackers to execute arbitrary code via a crafted payload entered into the "Snippet content" field under the "Edit Snippet" module.

Why it matters now

EPSS 0.0158 75th 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

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:monstra:monstra_cms:3.0.4:*:*:*:*:*:*:*3.0.4VulnerableMonstra
  • cpe:2.3:a:monstra:monstra_cms:3.0.4:*:*:*:*:*:*:* Versions 3.0.4 Vulnerable ·Monstra

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-23219
  2. 2026-10-03 Alias added: GHSA-r99v-5qp5-2g28

References

Exploit 1

  • TI-2025-42952 Monstra CMS v3.0.4 contains an arbitrary file upload vulnerability in the Files Manager… CVSS 3.1HIGH 8.8
  • TI-2020-10951 Monstra CMS 3.0.4 allows an attacker, who already has administrative access to modify… CVSS 3.1HIGH 7.2
  • TI-2018-08345 plugins/box/users/users.plugin.php in Monstra CMS 3.0.4 allows Login Rate Limiting Bypass… CVSS 3.0CRITICAL 9.8
  • TI-2018-07989 Monstra CMS 3.0.4 and earlier has XSS via index.php. CVSS 3.0MEDIUM 6.1
  • TI-2020-13908 An issue in Monstra CMS v3.0.4 allows attackers to execute arbitrary web scripts or HTML… CVSS 3.1MEDIUM 6.5
  • TI-2020-14643 Cross Site Scripting vulnerabilty in Monstra CMS 3.0.4 via the page feature in admin/index.php. CVSS 3.1MEDIUM 5.4
See all 8 →

Sources

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