Symfony patches ExpressionLanguage flaw in 5.4.54
Symfony 5.4.54 fixes CVE-2026-109449 in the ExpressionLanguage component by limiting how deeply expressions can nest.
MEDIUM · LARAVEL, October 18, 2026
curated by Sönke
The maintenance release also improves cache handling and character escaping in the console. No exploitation details or further security status are given.
Symfony 5.4.54 fixes CVE-2026-109449 in ExpressionLanguage by limiting how deeply expressions can nest.
The release also improves cache handling and character escaping in the console. The announcement gives no details on exploitation of the vulnerability.
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