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Start learningUpgrade squizlabs/php_codesniffer
to version 3.0.1 or higher.
squizlabs/php_codesniffer tokenizes PHP, JavaScript and CSS files and detects violations of a defined set of coding standards.
Affected versions of this package are vulnerable to Arbitrary Shell Command Execution. A properly crafted filename would it when using the --filter=gitmodified
command line option.