CVE-2026-47767
Severity CVSS v4.0:
HIGH
Type:
Unavailable / Other
Publication date:
14/07/2026
Last modified:
16/07/2026
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.
Impact
Base Score 4.0
8.30
Severity 4.0
HIGH
Base Score 3.x
9.80
Severity 3.x
CRITICAL
Vulnerable products and versions
| CPE | From | Up to |
|---|---|---|
| cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:* | 5.4.46 (including) | 5.4.52 (excluding) |
| cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:* | 6.4.14 (including) | 6.4.40 (excluding) |
| cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:* | 7.1.7 (including) | 7.4.12 (excluding) |
| cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:* | 8.0.0 (including) | 8.0.12 (excluding) |
To consult the complete list of CPE names with products and versions, see this page
References to Advisories, Solutions, and Tools
- https://github.com/symfony/symfony/commit/3228c3806ee511008bea19a95084d460b17e5d25
- https://github.com/symfony/symfony/releases/tag/v5.4.52
- https://github.com/symfony/symfony/releases/tag/v6.4.40
- https://github.com/symfony/symfony/releases/tag/v7.4.12
- https://github.com/symfony/symfony/releases/tag/v8.0.12
- https://github.com/symfony/symfony/security/advisories/GHSA-fqc7-9xjw-jrh3