AIKIDO-2026-10127
mailparser is vulnerable to Cross-site Scripting (XSS)
77
High Risk
This Affects:
mailparserTL;DR
Affected versions of this package are vulnerable to cross-site scripting (XSS) when converting plain text to HTML, because URLs and link text were inserted into anchor tags without proper escaping. Specially crafted URLs containing quotes or HTML content could break out of the attribute context and inject malicious code. The patched version escapes URL attributes and encodes link text before rendering, preventing XSS attacks.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range.
Background info
mailparser is vulnerable to Cross-site Scripting (XSS) in versions 2.4.2 - 3.9.2.
How to fix this
Upgrade the mailparser library to the patch version.
Are You Affected?
Connect your repositories to instantly see whether vulnerable or malicious packages exist in your codebase.
Free. No credit card required.
SOC 2Compliant
ISO 27001Compliant