Improper Input Validation in Symfony
An issue was discovered in Symfony before 4.2.12 and 4.3.x before 4.3.8. The VarExport component incorrectly escapes strings, allowing some specially crafted ones to escalate to execution of arbitrary PHP code. This is related to symfony/var-exporter.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Composer package | symfony/symfony | >= 4.2.0, < 4.2.12, >= 4.3.0, < 4.3.8 | 4.2.12, 4.3.8 |
| Composer package | symfony/var-exporter | >= 4.2.0, < 4.2.12, >= 4.3.0, < 4.3.8 | 4.2.12, 4.3.8 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2019-11325
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2019-11325.yaml
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/var-exporter/CVE-2019-11325.yaml
- https://github.com/symfony/symfony/releases/tag/v4.3.8
- https://github.com/symfony/var-exporter/compare/d8bf442...57e00f3
- https://symfony.com/blog/cve-2019-11325-fix-escaping-of-strings-in-varexporter
- https://symfony.com/blog/symfony-4-3-8-released
- https://symfony.com/cve-2019-11325
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H- Weakness (CWE)
CWE-116- Platform
- Composer
- Package
symfony/symfony, symfony/var-exporter- Disclosed
- 12.02.2020
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-w4rc-rx25-8m86 - CC BY 4.0
Vulnerability history: symfony/var-exporter
All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.
This is the only known vulnerability of this package.
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