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Vulnerabilities

CVE-2026-27492

Medium
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 s
CWE-488 — Weakness Type
Published: Feb 21, 2026  ·  Modified: Feb 28, 2026  ·  Source: NVD
CVSS v3
4.7
🔗 NVD Official
📄 Description (English)

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 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. This issue has been fixed in version 1.5.1.

🤖 AI Executive Summary

Lettermint Node.js SDK versions 1.5.0 and below fail to reset email properties between consecutive send() calls, allowing previous email content and recipient data to leak into subsequent messages. This vulnerability affects applications reusing a single client instance for multiple email operations, potentially exposing sensitive information to unintended recipients.

📄 Description (Arabic)

يفشل Lettermint Node.js SDK في الإصدارات 1.5.0 وما دونها في إعادة تعيين خصائص البريد الإلكتروني (المستقبل والموضوع والمحتوى والمرفقات) بين عمليات الإرسال المتتالية. عند إعادة استخدام نسخة عميل واحدة لإرسال رسائل متعددة، قد تتسرب بيانات من الرسالة السابقة إلى الرسالة التالية. يؤثر هذا بشكل خاص على التطبيقات التي تتعامل مع تدفقات معاملات مثل إعادة تعيين كلمات المرور والإخطارات.

🤖 ملخص تنفيذي (AI)

Lettermint Node.js SDK versions 1.5.0 and below fail to reset email properties between consecutive send() calls, allowing previous email content and recipient data to leak into subsequent messages. This vulnerability affects applications reusing a single client instance for multiple email operations, potentially exposing sensitive information to unintended recipients.

🤖 AI Intelligence Analysis Analyzed: May 30, 2026 07:25
🇸🇦 Saudi Arabia Impact Assessment
Saudi Relevance: high
🏢 Affected Saudi Sectors
banking fintech government healthcare telecom
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
5.0
/ 10.0
🔧 Remediation Steps (English)
Upgrade Lettermint Node.js SDK to version 1.5.1 or later immediately. Review all applications using versions 1.5.0 and below to ensure they are updated. Implement code review processes to verify email property handling and consider using separate client instances for each email send operation as a temporary mitigation.
🔧 خطوات المعالجة (العربية)
قم بترقية Lettermint Node.js SDK إلى الإصدار 1.5.1 أو أحدث فوراً. راجع جميع التطبيقات التي تستخدم الإصدارات 1.5.0 وما دونها للتأكد من تحديثها. طبق عمليات مراجعة الأكواد للتحقق من معالجة خصائص البريد الإلكتروني وفكر في استخدام نسخ عميل منفصلة لكل عملية إرسال بريد كتخفيف مؤقت.
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
A.14.2.1 A.14.2.5
🔵 SAMA CSF
CC6.1 CC6.2 CC7.2
🟡 ISO 27001:2022
A.14.2.1 A.14.2.5 A.12.6.1
📦 Affected Products / CPE 1 entries
lettermint:lettermint
📊 CVSS Score
4.7
/ 10.0 — Medium
📊 CVSS Vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack VectorL — Low / Local
Attack ComplexityH — High
Privileges RequiredL — Low / Local
User InteractionN — None / Network
ScopeU — Unchanged
ConfidentialityH — High
IntegrityN — None / Network
AvailabilityN — None / Network
📋 Quick Facts
Severity Medium
CVSS Score4.7
CWECWE-488
EPSS0.01%
Exploit No
Patch ✓ Yes
Published 2026-02-21
Source Feed nvd
Views 5
🇸🇦 Saudi Risk Score
5.0
/ 10.0 — Saudi Risk
Priority: MEDIUM
🏷️ Tags
patch-available CWE-488
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