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.
Published: 2026-03-03
Score: 5.1 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Cross‑Site Scripting
Action: Patch
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-7gmj-h9xc-mcxc mailparser vulnerable to Cross-site Scripting
History

Fri, 17 Apr 2026 13:45:00 +0000

Type Values Removed Values Added
Title mailparser Cross‑Site Scripting via textToHtml URL Sanitization

Fri, 13 Mar 2026 18:00:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:nodemailer:mailparser:*:*:*:*:*:node.js:*:*

Wed, 04 Mar 2026 21:15:00 +0000

Type Values Removed Values Added
First Time appeared Nodemailer
Nodemailer mailparser
Vendors & Products Nodemailer
Nodemailer mailparser

Tue, 03 Mar 2026 16:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 03 Mar 2026 05:15:00 +0000

Type Values Removed Values Added
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.
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:P'}

cvssV4_0

{'score': 5.1, 'vector': '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'}


Subscriptions

Nodemailer Mailparser
cve-icon MITRE

Status: PUBLISHED

Assigner: snyk

Published:

Updated: 2026-03-03T15:17:56.714Z

Reserved: 2026-03-02T18:41:43.509Z

Link: CVE-2026-3455

cve-icon Vulnrichment

Updated: 2026-03-03T15:11:40.011Z

cve-icon NVD

Status : Analyzed

Published: 2026-03-03T05:17:25.240

Modified: 2026-04-29T01:00:01.613

Link: CVE-2026-3455

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-04-17T13:30:19Z

Weaknesses