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CVE-2025-59526

Good to know:

Date: September 22, 2025

mailgen is a Node.js package that generates responsive HTML e-mails for sending transactional mail. Prior to version 2.0.30, there is an HTML injection vulnerability in plaintext e-mails generated by Mailgen. Projects are affected if the Mailgen.generatePlaintext(email) method is used and given user-generated content. This vulnerability has been patched in version 2.0.30. A workaround involves stripping all HTML tags before passing any content into Mailgen.generatePlaintext(email).

Severity Score

0.0

Related Resources (5)

Url: https://github.com/eladnava/mailgen/commit/741a0190ddae0f408b22ae3b5f0f4c3f5cf4f11d

Url: https://github.com/eladnava/mailgen/security/advisories/GHSA-j2xj-h7w5-r7vp

Url: https://nvd.nist.gov/vuln/detail/CVE-2025-59526

Url: https://github.com/eladnava/mailgen

Url: https://www.mend.io/vulnerability-database/CVE-2025-59526

Weakness Type (CWE)

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CWE-79

Top Fix

Upgrade Version

Upgrade to version mailgen - 2.0.30

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CVSS v3.1

Base Score:	0.0
Attack Vector (AV):	NETWORK
Attack Complexity (AC):	LOW
Privileges Required (PR):	NONE
User Interaction (UI):	NONE
Scope (S):	CHANGED
Confidentiality (C):	NONE
Integrity (I):	NONE
Availability (A):	NONE