CVE-2019-11512

David Wind, penetration tester with A1 Digital, has discovered that the SQL injection vulnerability originally published under CVE-2017-16558 can still be exploited in the file manager in Contao 4.

Untrusted input alters a database query, allowing the attacker to read or modify data the query was not intended to access. Typical impact: data disclosure or modification.

CVE-2019-11512 has a CVSS score of 9.8 (Critical). The vector is network-reachable, no privileges required, and no user interaction. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. A fixed version is available (4.4.39, 4.7.5); upgrading removes the vulnerable code path.

Kodem intelligence

1. What is CVE-2019-11512? CVE-2019-11512 is a critical-severity SQL injection vulnerability in contao/contao (composer), affecting versions >= 4.1.0, < 4.4.39. It is fixed in 4.4.39, 4.7.5. Untrusted input alters a database query, allowing the attacker to read or modify data the query was not intended to access.
2. How severe is CVE-2019-11512? CVE-2019-11512 has a CVSS score of 9.8 (Critical). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
3. Which packages are affected by CVE-2019-11512?
   • contao/contao (composer) (versions >= 4.1.0, < 4.4.39)
   • contao/core-bundle (composer) (versions >= 4.1.0, < 4.4.39)
4. Is there a fix for CVE-2019-11512? Yes. CVE-2019-11512 is fixed in 4.4.39, 4.7.5. Upgrade to this version or later.
5. Is CVE-2019-11512 exploitable, and should I be worried? Whether CVE-2019-11512 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
6. What actually determines whether CVE-2019-11512 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
7. How do I fix CVE-2019-11512?
   • Upgrade contao/contao to 4.4.39 or later
   • Upgrade contao/contao to 4.7.5 or later
   • Upgrade contao/core-bundle to 4.4.39 or later
   • Upgrade contao/core-bundle to 4.7.5 or later