Vulnerability DatabaseCVE-2026-47767
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CVE-2026-47767
Published:July 14, 2026
Updated:July 21, 2026
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.
Affected Packages
https://github.com/symfony/symfony.git (GITHUB):
Affected version(s) >=v5.4.46 <v5.4.52
Fix Suggestion:
Update to version v5.4.52
https://github.com/symfony/symfony.git (GITHUB):
Affected version(s) >=v6.4.14 <v6.4.40
Fix Suggestion:
Update to version v6.4.40
https://github.com/symfony/symfony.git (GITHUB):
Affected version(s) >=v7.1.7 <v7.4.12
Fix Suggestion:
Update to version v7.4.12
https://github.com/symfony/symfony.git (GITHUB):
Affected version(s) >=v8.0.0-BETA1 <v8.0.12
Fix Suggestion:
Update to version v8.0.12
symfony/runtime (PHP):
Affected version(s) >=v7.1.7 <v7.4.12
Fix Suggestion:
Update to version v7.4.12
symfony/runtime (PHP):
Affected version(s) =v5.4.46 <v5.4.52
Fix Suggestion:
Update to version v5.4.52
symfony/runtime (PHP):
Affected version(s) =v5.4.46 <v5.4.52
Fix Suggestion:
Update to version v5.4.52
symfony/symfony (PHP):
Affected version(s) >=v5.4.46 <v5.4.52
Fix Suggestion:
Update to version v5.4.52
symfony/symfony (PHP):
Affected version(s) >=v6.4.14 <v6.4.40
Fix Suggestion:
Update to version v6.4.40
symfony/runtime (PHP):
Affected version(s) >=v7.1.7 <v7.4.12
Fix Suggestion:
Update to version v7.4.12
symfony/runtime (PHP):
Affected version(s) >=v6.4.14 <v6.4.40
Fix Suggestion:
Update to version v6.4.40
symfony/runtime (PHP):
Affected version(s) >=v8.0.0 <v8.0.12
Fix Suggestion:
Update to version v8.0.12
symfony/symfony (PHP):
Affected version(s) >=v8.0.0 <v8.0.12
Fix Suggestion:
Update to version v8.0.12
symfony/runtime (PHP):
Affected version(s) >=v6.4.14 <v6.4.40
Fix Suggestion:
Update to version v6.4.40
symfony/runtime (PHP):
Affected version(s) >=v8.0.0 <v8.0.12
Fix Suggestion:
Update to version v8.0.12
symfony/symfony (PHP):
Affected version(s) >=v7.1.7 <v7.4.12
Fix Suggestion:
Update to version v7.4.12
Related Resources (7)
https://github.com/symfony/symfony
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/releases/tag/v5.4.52
https://github.com/symfony/symfony/security/advisories/GHSA-fqc7-9xjw-jrh3
https://github.com/symfony/symfony/commit/3228c3806ee511008bea19a95084d460b17e5d25
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CVSS v4
Base Score:
8.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
8.2
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Interpretation Conflict
CWE-436
Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
CWE-74
Improper Input Validation
CWE-20
EPSS
Base Score:
0.39