What is CVE-2018-20028?

CVE-2018-20028 is a medium-severity vulnerability in Contao Cms. CVSS score: 6.5/10. Published 2019-04-17.

How severe is CVE-2018-20028?

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

Vulnerability in Contao Cms

CVE-2018-20028

Contao 3.x before 3.5.37, 4.4.x before 4.4.31 and 4.6.x before 4.6.11 has Incorrect Access Control.

Published 2019-04-17 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.009 (58.3th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 58th percentile — 58.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Contao Cms

References

contao.org/en/news.html (Vendor Advisory)
contao.org/en/news/security-vulnerability-cve-2018-20028.html (Vendor Advisory)

Frequently asked questions

What is CVE-2018-20028?: CVE-2018-20028 is a medium-severity vulnerability in Contao Cms. CVSS score: 6.5/10. Published 2019-04-17.
How severe is CVE-2018-20028?: Medium severity. CVSS v3 base score is 6.5 out of 10.