Vulnerability Database · Packagist · symfony/security-http · Version
symfony/security-http v6.4.21
v6.4.21 is affected by 4 vulnerabilities.
The vulnerabilities that cover this exact version are listed below with the fixed version to move to.
Critical 0 High 2 Medium 2 Low 0 Unrated 0
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Database updated 23/Oct/2026
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01 Vulnerabilities affecting this version
symfony/security-http v6.4.21 vulnerabilities
4 vulnerabilities cover symfony/security-http v6.4.21. Open the full list in the database.
| Vulnerability | Severity | Fixed version | Disclosed |
|---|---|---|---|
| CVE-2026-45063: Symfony Security-HTTP Package Vulnerable to Identity Spoofing via Unanchored DN Regex | 8.7 high | 5.4.52 | 27 May 2026 |
| Withdrawn Advisory: Symfony http-security has authentication bypass | 7.5 medium | 7.1.0 | 29 Nov 2024 |
| CVE-2026-45069: Symfony Security-Http Package Accepts JWTs Missing Critical Claims | 4.9 medium | 6.4.40 | 27 May 2026 |
| CVE-2026-48489: Symfony Security Firewall Bypass Leading to Unauthenticated Access | N/A high | 5.4.53 | 15 Jun 2026 |
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Questions
About symfony/security-http v6.4.21
Is symfony/security-http v6.4.21 vulnerable?
Yes. 4 vulnerabilities in the Vulert database cover symfony/security-http v6.4.21: 0 critical, 2 high, 2 medium and 0 low. Each entry above names the fixed version to move to.
How do I monitor symfony/security-http for upcoming vulnerabilities?
Upload the manifest or SBOM for your application at vulert.com/scanner and Vulert keeps checking the symfony/security-http version you actually run against new disclosures, then alerts you when one affects it. There is no installation and no source-code access required.