Versions of the package mailparser before 3.9.3 are vulnerable to Cross-site Scripting (XSS) via the textToHtml() function due to the improper sanitisation of URLs in the email content. An attacker can execute arbitrary scripts in victim browsers by adding extra quote " to the URL with embedded malicious JavaScript code.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
Active
User action required
Impact Assessment
Confidentiality
None
No data leak
Integrity
Low
Partial data modification
Availability
None
No disruption
CVSS Vector v4.0
Weakness Type (CWE)
References 4
https://gist.github.com/hayageek/7fcb225e3b1ea9a341d560403fbb585a
report@snyk.io
https://github.com/nodemailer/mailparser/commit/921a67df4cfb38f0b411037d7b26fbd…
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https://github.com/nodemailer/mailparser/issues/412
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https://security.snyk.io/vuln/SNYK-JS-MAILPARSER-15204032
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