What’s Vulnerable › Vulnerabilities

CVE-2020-2253

• Severity: medium (CVSS 4.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-09-16 · updated 2026-06-17
• Weakness: CWE-295

Description

Jenkins Email Extension Plugin 2.75 and earlier does not perform hostname validation when connecting to the configured SMTP server.

Affected products

• Jenkins Project Jenkins Email Extension Plugin: through 2.75

References

• http://www.openwall.com/lists/oss-security/2020/09/16/3
• https://www.jenkins.io/security/advisory/2020-09-16/#SECURITY-1851
• http://www.openwall.com/lists/oss-security/2020/09/16/3
• https://www.jenkins.io/security/advisory/2020-09-16/#SECURITY-1851

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