CVE-2026-47767
Symfony: SymfonyRuntime CVE-2024-50340 Patch Bypass: Web Requests Can Still Set APP_ENV/APP_DEBUG via parse_str/SAPI Argv Mismatch
CVSS Score
0.0
EPSS Score
0.4%
EPSS Percentile
31th
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.
| CWE | CWE-436 |
| Vendor | symfony |
| Product | symfony |
| Published | Jul 14, 2026 |
| Last Updated | Jul 16, 2026 |
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Affected Versions
symfony / symfony
>= 5.4.46, < 5.4.52 >= 6.4.14, < 6.4.40 >= 7.1.7, < 7.4.12 >= 8.0.0-BETA1, < 8.0.12
symfony / runtime
>= 5.4.46, < 5.4.52 >= 6.4.14, < 6.4.40 >= 7.1.7, < 7.4.12 >= 8.0.0-BETA1, < 8.0.12
References
github.com: https://github.com/symfony/symfony/security/advisories/GHSA-fqc7-9xjw-jrh3 github.com: https://github.com/symfony/symfony/commit/3228c3806ee511008bea19a95084d460b17e5d25 github.com: https://github.com/symfony/symfony/releases/tag/v5.4.52 github.com: https://github.com/symfony/symfony/releases/tag/v6.4.40 github.com: https://github.com/symfony/symfony/releases/tag/v7.4.12 github.com: https://github.com/symfony/symfony/releases/tag/v8.0.12