Hostname Validation Flaw in Jenkins Mailer Plugin by Jenkins

CVE-2020-2252

What is CVE-2020-2252?

The Jenkins Mailer Plugin, prior to version 1.33, lacks proper hostname validation when establishing connections with configured SMTP servers. This oversight can potentially expose the system to risks associated with unsecured communication channels, as the plugin does not verify that the server it connects to matches the expected hostname. This could allow attackers to exploit the connection and conduct malicious activities, making it crucial for users to update to the latest version to mitigate such vulnerabilities.

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