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 Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction Active

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact Low

Subsequent System Integrity Impact Low

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact Low

Integrity Impact Low

Availability Impact None

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
n/a mailparser affected
Version Status Constraints
0 affected < 3.9.3

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Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

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

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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: snyk

Published:

Updated: 2026-03-03T05:00:11.753Z

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

Link: CVE-2026-3455

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

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

Modified: 2026-03-03T05:17:25.240

Link: CVE-2026-3455

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses