What is CVE-2017-16558?

CVE-2017-16558 is a critical-severity vulnerability in Contao Cms, classified under SQL Injection. CVSS score: 9.8/10. Published 2019-04-25.

How severe is CVE-2017-16558?

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

SQL Injection in Contao Cms

CVE-2017-16558

Contao 3.0.0 to 3.5.30 and 4.0.0 to 4.4.7 contains an SQL injection vulnerability in the back end as well as in the listing module.

Vulnerability class: SQL Injection

Published 2019-04-25 · 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: 0.015 (73.3th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 73rd percentile — 73.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.015 · change: +0.003

Affected products

Contao Cms

Weakness classification (CWE)

CWE-89 — SQL Injection

References

contao.org/de/changelog/versions/4.4.html (Vendor Advisory)
contao.org/en/news/contao-4_4_8.html (Vendor Advisory)

Frequently asked questions

What is CVE-2017-16558?: CVE-2017-16558 is a critical-severity vulnerability in Contao Cms, classified under SQL Injection. CVSS score: 9.8/10. Published 2019-04-25.
How severe is CVE-2017-16558?: Critical severity. CVSS v3 base score is 9.8 out of 10.