What is CVE-2020-19951?

CVE-2020-19951 is a high-severity vulnerability in Yzmcms, classified under Cross-Site Request Forgery (CSRF). CVSS score: 8.8/10. Published 2021-09-23.

How severe is CVE-2020-19951?

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

Is CVE-2020-19951 known to be exploited?

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

CSRF in Yzmcms

CVE-2020-19951

A cross-site request forgery (CSRF) in /controller/pay.class.php of YzmCMS v5.5 allows attackers to access sensitive components of the application.

Vulnerability class: CSRF (Cross-Site Request Forgery)

Published 2021-09-23 · last modified 2026-06-17.

CVSS v3 metric

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

EPSS exploit prediction

EPSS: 0.006 (44.7th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 44.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Yzmcms — versions 5.5

Weakness classification (CWE)

CWE-352 — Cross-Site Request Forgery (CSRF)

Public proof-of-concept exploits

References

github.com/yzmcms/yzmcms/issues/43 (Exploit, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2020-19951?: CVE-2020-19951 is a high-severity vulnerability in Yzmcms, classified under Cross-Site Request Forgery (CSRF). CVSS score: 8.8/10. Published 2021-09-23.
How severe is CVE-2020-19951?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2020-19951 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.