Vulnerability Description
Symfony is a PHP framework for web and console applications and a set of reusable PHP components. From 5.4.46 until 5.4.52, 6.4.40, 7.4.12, and 8.0.12, the CVE-2024-50340 fix gated runtime argv parsing on empty($_GET), but parse_str() and the web SAPI can disagree, allowing a crafted query string to leave $_GET empty while $_SERVER['argv'] still carries attacker-controlled --env or --no-debug flags that change APP_ENV or APP_DEBUG. This issue is fixed in versions 5.4.52, 6.4.40, 7.4.12, and 8.0.12.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Sensiolabs | Symfony | >= 5.4.46, < 5.4.52 |
Related Weaknesses (CWE)
References
- https://github.com/symfony/symfony/commit/3228c3806ee511008bea19a95084d460b17e5dPatch
- https://github.com/symfony/symfony/releases/tag/v5.4.52ProductRelease Notes
- https://github.com/symfony/symfony/releases/tag/v6.4.40ProductRelease Notes
- https://github.com/symfony/symfony/releases/tag/v7.4.12ProductRelease Notes
- https://github.com/symfony/symfony/releases/tag/v8.0.12ProductRelease Notes
- https://github.com/symfony/symfony/security/advisories/GHSA-fqc7-9xjw-jrh3Not Applicable
FAQ
What is CVE-2026-47767?
CVE-2026-47767 is a vulnerability with a CVSS score of 9.8 (CRITICAL). Symfony is a PHP framework for web and console applications and a set of reusable PHP components. From 5.4.46 until 5.4.52, 6.4.40, 7.4.12, and 8.0.12, the CVE-2024-50340 fix gated runtime argv parsin...
How severe is CVE-2026-47767?
CVE-2026-47767 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-47767?
Check the references section above for vendor advisories and patch information. Affected products include: Sensiolabs Symfony.