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Mailman Improper Neutralization of Input During Web Page Generation (Cross-site Scripting) Vulnerability - CVE-2020-12137 - Vulnerability Database
Mailman

Mailman Improper Neutralization of Input During Web Page Generation (Cross-site Scripting) Vulnerability - CVE-2020-12137

Medium
Reference: CVE-2020-12137
NVD Link: https://nvd.nist.gov/vuln/detail/CVE-2020-12137
Title: Mailman Improper Neutralization of Input During Web Page Generation (Cross-site Scripting) Vulnerability
Overview:

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.