Vulnerability Database · Packagist · symfony/symfony · Version
symfony/symfony v5.4.21
v5.4.21 is affected by 2 vulnerabilities.
The vulnerabilities that cover this exact version are listed below with the fixed version to move to.
Critical 0 High 0 Medium 1 Low 1 Unrated 0
-
Database updated 23/Oct/2026
Concerned about your application's security?
Vulert continues monitoring your dependencies and alerts you when new vulnerabilities are disclosed. No installation and no source-code access required.
01 Vulnerabilities affecting this version
symfony/symfony v5.4.21 vulnerabilities
2 vulnerabilities cover symfony/symfony v5.4.21. Open the full list in the database.
| Vulnerability | Severity | Fixed version | Disclosed |
|---|---|---|---|
| CVE-2024-50343: Symfony Validator Regex Vulnerability Leading to Incorrect Input Handling | 3.1 low | 5.4.43 | 06 Nov 2024 |
| CVE-2012-6432: Symfony Access Control Vulnerability in symfony/symfony | N/A medium | No fix published | 17 May 2022 |
Looking for another version, or everything Vulert holds for symfony/symfony?
Questions
About symfony/symfony v5.4.21
Is symfony/symfony v5.4.21 vulnerable?
Yes. 2 vulnerabilities in the Vulert database cover symfony/symfony v5.4.21: 0 critical, 0 high, 1 medium and 1 low. Each entry above names the fixed version to move to.
How do I monitor symfony/symfony for upcoming vulnerabilities?
Upload the manifest or SBOM for your application at vulert.com/scanner and Vulert keeps checking the symfony/symfony version you actually run against new disclosures, then alerts you when one affects it. There is no installation and no source-code access required.