CVE-2025-59526 | THREATINT

Description

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).

PUBLISHED Reserved 2025-09-17 | Published 2025-09-22 | Updated 2025-09-22 | Assigner GitHub_M

LOW: 2.7CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:L/E:U

Problem types

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Product status

< 2.0.30

affected

References

github.com/...ailgen/security/advisories/GHSA-j2xj-h7w5-r7vp

github.com/...ommit/741a0190ddae0f408b22ae3b5f0f4c3f5cf4f11d

cve.org (CVE-2025-59526)

nvd.nist.gov (CVE-2025-59526)

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