Vulnerability Database · Packagist · contao/contao · Version
contao/contao 5.3.15
5.3.15 is affected by 3 vulnerabilities.
The vulnerabilities that cover this exact version are listed below with the fixed version to move to.
Critical 1 High 0 Medium 0 Low 2 Unrated 0
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Database updated 23/Oct/2026
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01 Vulnerabilities affecting this version
contao/contao 5.3.15 vulnerabilities
3 vulnerabilities cover contao/contao 5.3.15. Open the full list in the database.
| Vulnerability | Severity | Fixed version | Disclosed |
|---|---|---|---|
| CVE-2017-16558: Contao SQL injection in the backend and listing module | 9.8 critical | No fix published | 24 May 2022 |
| SVG File Upload Vulnerability in Contao 5.4.1: Potential XSS Attack | 4.8 low | No fix published | 02 Oct 2024 |
| CVE-2026-55824: Contao Crawler Exposes Authentication Credentials to External Hosts | 2.6 low | 5.3.47 | 06 Aug 2026 |
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Questions
About contao/contao 5.3.15
Is contao/contao 5.3.15 vulnerable?
Yes. 3 vulnerabilities in the Vulert database cover contao/contao 5.3.15: 1 critical, 0 high, 0 medium and 2 low. Each entry above names the fixed version to move to.
How do I monitor contao/contao for upcoming vulnerabilities?
Upload the manifest or SBOM for your application at vulert.com/scanner and Vulert keeps checking the contao/contao version you actually run against new disclosures, then alerts you when one affects it. There is no installation and no source-code access required.