lettermint vulnerabilities

Products

• lettermint-node 1

Latest lettermint CVEs

Newest publication first

1. CVE-2026-27492 Lettermint Node.js SDK leaks email properties to unintended recipients when client instance is reused

   Published 2026-02-21

   Medium·CVSS 4.7

   Lettermint Node.js SDK is the official Node.js SDK for Lettermint. In versions 1.5.0 and below, email properties (such as to, subject, html, text, and attachments) are not reset between sends when a single client instance is reused across multiple .send() calls. This can cause pr...

Sources: CVE.org, NVD, CISA KEV, FIRST EPSS, OSV and public exploit-reference metadata. Product matching comes from the published CVE records. A proof-of-concept means public code exists; it is not evidence of exploitation.