CVE-2019-16056
HighCVSS 7.5Exploitation Probability (EPSS)
Very high risk92th percentile - higher than 92% of all known CVEs
Summary
An issue was discovered in Python through 2.7.16, 3.x through 3.5.7, 3.6.x through 3.6.9, and 3.7.x through 3.7.4. The email module wrongly parses email addresses that contain multiple @ characters. An application that uses the email module and implements some kind of checks on the From/To headers of a message could be tricked into accepting an email address that should be denied. An attack may be the same as in CVE-2019-11340; however, this CVE applies to Python more generally.
Risk Assessment
Risk of bypassing security checks in applications processing email addresses, potentially leading to acceptance of unauthorized senders or recipients.
Recommendation
It is recommended to upgrade Python to a version containing the fix for parsing email addresses with multiple @ characters.
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Original NVD description (English source)
An issue was discovered in Python through 2.7.16, 3.x through 3.5.7, 3.6.x through 3.6.9, and 3.7.x through 3.7.4. The email module wrongly parses email addresses that contain multiple @ characters. An application that uses the email module and implements some kind of checks on the From/To headers of a message could be tricked into accepting an email address that should be denied. An attack may be the same as in CVE-2019-11340; however, this CVE applies to Python more generally.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS