| パッケージ | 影響を受けるバージョン | 修正済みバージョン |
|---|---|---|
| lettermint | < 1.5.1 | 1.5.1 |
| lettermint | < 1.5.1 | 1.5.1 |
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 properties from a previous send to leak into a subsequent one, potentially delivering content or recipient addresses to unintended parties. Applications sending emails to different recipients in sequence — such as transactional flows like password resets or notifications — are affected.
Yes, the issue has been patched. Users should upgrade to v1.5.1 or later.
If upgrading immediately is not possible, instantiate a new client for each send:
const client = new Lettermint({ apiKey: process.env.LETTERMINT_API_KEY });
await client.email.to('...').subject('...').html('...').send();
This ensures no state is carried over between sends.
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