What is CVE-2020-23219?

CVE-2020-23219 is a high-severity vulnerability in Monstra Cms, classified under Code Injection. CVSS score: 8.8/10. Published 2021-07-01.

How severe is CVE-2020-23219?

High severity. CVSS v3 base score is 8.8 out of 10.

RCE in Monstra Cms

CVE-2020-23219

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.

Vulnerability class: RCE (Remote Code Execution)

Published 2021-07-01 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.016 (74.6th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 75th percentile — 74.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: 0.000

Affected products

Monstra Cms — versions 3.0.4

Weakness classification (CWE)

CWE-94 — Code Injection

References

github.com/monstra-cms/monstra/issues/466 (Exploit, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2020-23219?: CVE-2020-23219 is a high-severity vulnerability in Monstra Cms, classified under Code Injection. CVSS score: 8.8/10. Published 2021-07-01.
How severe is CVE-2020-23219?: High severity. CVSS v3 base score is 8.8 out of 10.