CVE-2026-3455

CVSS 5.1 MEDIUMEPSS 0.3%CWE-79

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.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:L/SI:L/SA:N/E:P

Affected products

n/a · mailparser

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References

https://gist.github.com/hayageek/7fcb225e3b1ea9a341d560403fbb585a https://github.com/nodemailer/mailparser/commit/921a67df4cfb38f0b411037d7b26fbd4d5411b08 https://github.com/nodemailer/mailparser/issues/412 https://security.snyk.io/vuln/SNYK-JS-MAILPARSER-15204032