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information disclosure in exif_read_data() function
In PHP versions 7.2.x below 7.2.9, 7.3.x below 7.3.16, and 7.4.x below 7.4.4, while parsing EXIF data using the exif_read_data() function, it is possible for malicious data to cause PHP to read one byte of uninitialized memory. This could potentially lead to information disclosure or crash.
exif_read_data()
Upgrade to PHP 7.2.9 or above, 7.3.16 or above, or 7.4.4 or above.
Direct link to CVE-2020-7064 >
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