Vulnerability Details CVE-2020-12137
GNU Mailman 2.x before 2.1.30 uses the .obj extension for scrubbed application/octet-stream MIME parts. This behavior may contribute to XSS attacks against list-archive visitors, because an HTTP reply from an archive web server may lack a MIME type, and a web browser may perform MIME sniffing, conclude that the MIME type should have been text/html, and execute JavaScript code.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.007
EPSS Ranking 71.2%
CVSS Severity
CVSS v3 Score 6.1
CVSS v2 Score 4.3
Products affected by CVE-2020-12137
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cpe:2.3:a:gnu:mailman:2.0
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cpe:2.3:a:gnu:mailman:2.0.1
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cpe:2.3:a:gnu:mailman:2.0.10
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cpe:2.3:a:gnu:mailman:2.0.11
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cpe:2.3:a:gnu:mailman:2.0.12
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cpe:2.3:a:gnu:mailman:2.0.13
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cpe:2.3:a:gnu:mailman:2.0.14
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cpe:2.3:a:gnu:mailman:2.0.2
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cpe:2.3:a:gnu:mailman:2.0.3
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cpe:2.3:a:gnu:mailman:2.0.4
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cpe:2.3:a:gnu:mailman:2.0.5
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cpe:2.3:a:gnu:mailman:2.0.6
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cpe:2.3:a:gnu:mailman:2.0.7
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cpe:2.3:a:gnu:mailman:2.0.8
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cpe:2.3:a:gnu:mailman:2.0.9
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cpe:2.3:a:gnu:mailman:2.1
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cpe:2.3:a:gnu:mailman:2.1.1
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cpe:2.3:a:gnu:mailman:2.1.10
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cpe:2.3:a:gnu:mailman:2.1.10b1
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cpe:2.3:a:gnu:mailman:2.1.10b3
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cpe:2.3:a:gnu:mailman:2.1.10b4
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cpe:2.3:a:gnu:mailman:2.1.11
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cpe:2.3:a:gnu:mailman:2.1.12
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cpe:2.3:a:gnu:mailman:2.1.13
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cpe:2.3:a:gnu:mailman:2.1.14
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cpe:2.3:a:gnu:mailman:2.1.14-1
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cpe:2.3:a:gnu:mailman:2.1.15
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cpe:2.3:a:gnu:mailman:2.1.16
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cpe:2.3:a:gnu:mailman:2.1.17
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cpe:2.3:a:gnu:mailman:2.1.18
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cpe:2.3:a:gnu:mailman:2.1.18-1
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cpe:2.3:a:gnu:mailman:2.1.19
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cpe:2.3:a:gnu:mailman:2.1.2
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cpe:2.3:a:gnu:mailman:2.1.20
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cpe:2.3:a:gnu:mailman:2.1.21
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cpe:2.3:a:gnu:mailman:2.1.22
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cpe:2.3:a:gnu:mailman:2.1.23
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cpe:2.3:a:gnu:mailman:2.1.24
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cpe:2.3:a:gnu:mailman:2.1.25
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cpe:2.3:a:gnu:mailman:2.1.26
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cpe:2.3:a:gnu:mailman:2.1.27
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cpe:2.3:a:gnu:mailman:2.1.28
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cpe:2.3:a:gnu:mailman:2.1.29
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cpe:2.3:a:gnu:mailman:2.1.3
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cpe:2.3:a:gnu:mailman:2.1.4
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cpe:2.3:a:gnu:mailman:2.1.5
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cpe:2.3:a:gnu:mailman:2.1.5.8
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cpe:2.3:a:gnu:mailman:2.1.6
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cpe:2.3:a:gnu:mailman:2.1.7
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cpe:2.3:a:gnu:mailman:2.1.8
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cpe:2.3:a:gnu:mailman:2.1.9
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cpe:2.3:a:opensuse:backports_sle:15.0
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cpe:2.3:o:canonical:ubuntu_linux:16.04
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cpe:2.3:o:canonical:ubuntu_linux:18.04
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cpe:2.3:o:debian:debian_linux:10.0
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cpe:2.3:o:debian:debian_linux:8.0
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cpe:2.3:o:debian:debian_linux:9.0
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cpe:2.3:o:fedoraproject:fedora:31
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cpe:2.3:o:fedoraproject:fedora:32
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cpe:2.3:o:opensuse:leap:15.2