All vulnerabilities

Servers and applications

CVE-2019-16056

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…

Severity
High 7.5
Published
6 Sept 2019
Last changed
14 Oct 2026
Added to UpHeron
21 Oct 2026
Sources
NVD

Affected software

SoftwareAffected versions
PythonServers and applications · cpe:a:python:python
  • From 3.7.0 up to 3.7.4
  • From 3.6.0 up to 3.6.9
  • From 3.5.0 up to 3.5.7
  • From 3.4.0 up to 3.4.10
All 9 release lines
  • Every version up to 2.7.16
  • From 3.0.0 up to 3.0.1
  • From 3.1.0 up to 3.1.5
  • From 3.2.0 up to 3.2.6
  • From 3.3.0 up to 3.3.7
  • From 3.4.0 up to 3.4.10
  • From 3.5.0 up to 3.5.7
  • From 3.6.0 up to 3.6.9
  • From 3.7.0 up to 3.7.4

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2019-16056
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2019-16056