Home/CVE/Jenkins Email Extension Plugin 2.75 and earlier does not perform hostname validation when connecting to the configured S
CVE

CVE-2020-2253

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

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

MEDIUM · CVSS 4.8 EPSS 0.00036
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-295Improper Certificate Validation
▤

Affected Products & Versions

1
jenkins email extension<= 2.75
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
Maven org.jenkins-ci.plugins:email-ext MODERATE fixed in 2.76
▣

Scoring & Timeline

4.8
MEDIUM · CVSS v3.1 · jenkinsci-cert@googlegroups.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD16 Sep 2020 · 02:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://www.openwall.com/lists/oss-security/2020/09/16/3Third Party Advisory
https://www.jenkins.io/security/advisory/2020-09-16/#SECURITY-1851Vendor Advisory
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