What is CVE-2020-25414?

CVE-2020-25414 is a critical-severity vulnerability in Monstra, classified under Inclusion of Functionality from Untrusted Control Sphere. CVSS score: 9.8/10. Published 2021-06-17.

How severe is CVE-2020-25414?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2020-25414 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Monstra

CVE-2020-25414

A local file inclusion vulnerability was discovered in the captcha function in Monstra 3.0.4 which allows remote attackers to execute arbitrary PHP code.

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

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.020 (80.3th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 80th percentile — 80.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.020 · newest: 0.020 · change: 0.000

Affected products

Monstra — versions 3.0.4

Weakness classification (CWE)

CWE-829 — Inclusion of Functionality from Untrusted Control Sphere

Public proof-of-concept exploits

References

github.com/monstra-cms/monstra/issues/469 (Exploit, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2020-25414?: CVE-2020-25414 is a critical-severity vulnerability in Monstra, classified under Inclusion of Functionality from Untrusted Control Sphere. CVSS score: 9.8/10. Published 2021-06-17.
How severe is CVE-2020-25414?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2020-25414 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.