What is CVE-2019-16678?

CVE-2019-16678 is a medium-severity vulnerability in Yzmcms, classified under Cross-Site Request Forgery (CSRF). CVSS score: 6.5/10. Published 2019-09-21.

How severe is CVE-2019-16678?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Is CVE-2019-16678 known to be exploited?

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

CSRF in Yzmcms

CVE-2019-16678

admin/urlrule/add.html in YzmCMS 5.3 allows CSRF with a resultant denial of service by adding a superseding route.

Vulnerability class: CSRF (Cross-Site Request Forgery)

Published 2019-09-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.007 (49.9th percentile), scored 2026-10-07.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 49.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Yzmcms — versions 5.3

Weakness classification (CWE)

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

Public proof-of-concept exploits

References

github.com/yzmcms/yzmcms/issues/27 (Exploit, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2019-16678?: CVE-2019-16678 is a medium-severity vulnerability in Yzmcms, classified under Cross-Site Request Forgery (CSRF). CVSS score: 6.5/10. Published 2019-09-21.
How severe is CVE-2019-16678?: Medium severity. CVSS v3 base score is 6.5 out of 10.
Is CVE-2019-16678 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.