What is CVE-2019-10643?

CVE-2019-10643 is a critical-severity vulnerability in Contao Cms, classified under Improper Authentication. CVSS score: 9.8/10. Published 2019-04-17.

How severe is CVE-2019-10643?

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

Auth bypass in Contao Cms

CVE-2019-10643

Contao 4.7 allows Use of a Key Past its Expiration Date.

Vulnerability class: Broken Authentication

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

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.013 (68.3th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 68th percentile — 68.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000

Affected products

Contao Cms — versions 4.7.0

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

contao.org/en/news.html (Vendor Advisory)
contao.org/en/news/security-vulnerability-cve-2019-10643.html (Vendor Advisory)

Frequently asked questions

What is CVE-2019-10643?: CVE-2019-10643 is a critical-severity vulnerability in Contao Cms, classified under Improper Authentication. CVSS score: 9.8/10. Published 2019-04-17.
How severe is CVE-2019-10643?: Critical severity. CVSS v3 base score is 9.8 out of 10.