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CVE

CWE

Training

CVE-2026-3455

Published: Mar 3, 2026

Modified: Mar 3, 2026

PUBLISHED

CVSS v3.1

6.1

MEDIUM

Description

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.

Vendor	Product	Versions
n/a	mailparser	affected `0 - < 3.9.3`

Weaknesses (CWE)

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:P

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

References

https://security.snyk.io/vuln/SNYK-JS-MAILPARSER-15204032

https://github.com/nodemailer/mailparser/commit/921a67df4cfb38f0b411037d7b26fbd4d5411b08

https://gist.github.com/hayageek/7fcb225e3b1ea9a341d560403fbb585a

https://github.com/nodemailer/mailparser/issues/412

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