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Global vulnerability Artificial Intelligence and Technology HIGH 21m Global general Technology and Artificial Intelligence MEDIUM 3h Global general Technology and Artificial Intelligence HIGH 4h Global vulnerability Higher Education CRITICAL 13h Global data_breach Government HIGH 14h Global supply_chain Software Development and Open Source Communities CRITICAL 14h Global malware Software Development CRITICAL 14h Global phishing Multiple Sectors HIGH 15h Global vulnerability Web Applications CRITICAL 16h Global apt Critical Infrastructure CRITICAL 16h Global vulnerability Artificial Intelligence and Technology HIGH 21m Global general Technology and Artificial Intelligence MEDIUM 3h Global general Technology and Artificial Intelligence HIGH 4h Global vulnerability Higher Education CRITICAL 13h Global data_breach Government HIGH 14h Global supply_chain Software Development and Open Source Communities CRITICAL 14h Global malware Software Development CRITICAL 14h Global phishing Multiple Sectors HIGH 15h Global vulnerability Web Applications CRITICAL 16h Global apt Critical Infrastructure CRITICAL 16h Global vulnerability Artificial Intelligence and Technology HIGH 21m Global general Technology and Artificial Intelligence MEDIUM 3h Global general Technology and Artificial Intelligence HIGH 4h Global vulnerability Higher Education CRITICAL 13h Global data_breach Government HIGH 14h Global supply_chain Software Development and Open Source Communities CRITICAL 14h Global malware Software Development CRITICAL 14h Global phishing Multiple Sectors HIGH 15h Global vulnerability Web Applications CRITICAL 16h Global apt Critical Infrastructure CRITICAL 16h
Vulnerabilities

CVE-2026-35389

High
CWE-295 — Weakness Type
Published: Apr 6, 2026  ·  Modified: Apr 13, 2026  ·  Source: NVD
CVSS v3
7.5
🔗 NVD Official
📄 Description (English)

Bulwark Webmail is a self-hosted webmail client for Stalwart Mail Server. Prior to 1.4.11, S/MIME signature verification did not validate the certificate trust chain (checkChain: false). Any email signed with a self-signed or untrusted certificate was displayed as having a valid signature. This vulnerability is fixed in 1.4.11.

🤖 AI Executive Summary

Bulwark Webmail versions prior to 1.4.11 fail to validate S/MIME certificate trust chains, allowing emails signed with self-signed or untrusted certificates to appear as validly signed. This vulnerability affects organizations using Stalwart Mail Server with Bulwark Webmail for email communications.

📄 Description (Arabic)

يفشل Bulwark Webmail في الإصدارات السابقة للإصدار 1.4.11 في التحقق من سلسلة الثقة لشهادات S/MIME، مما يسمح برسائل موقعة بشهادات غير موثوقة أو موقعة ذاتياً بالظهور كموقعة بشكل صحيح. يمكن للمهاجمين استخدام هذا الضعف لانتحال هوية المرسلين الموثوقين وخداع المستخدمين. الإصلاح متوفر في الإصدار 1.4.11 الذي يفعل التحقق الصحيح من سلسلة الثقة.

🤖 ملخص تنفيذي (AI)

إصدارات Bulwark Webmail السابقة للإصدار 1.4.11 لا تتحقق من سلاسل الثقة لشهادات S/MIME، مما يسمح برسائل موقعة بشهادات غير موثوقة بالظهور كموقعة بشكل صحيح. يؤثر هذا الضعف على المنظمات التي تستخدم Stalwart Mail Server مع Bulwark Webmail.

🤖 AI Intelligence Analysis Analyzed: May 2, 2026 19:16
🇸🇦 Saudi Arabia Impact Assessment
Saudi Relevance: high
🏢 Affected Saudi Sectors
banking government healthcare telecom
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
7.0
/ 10.0
🔧 Remediation Steps (English)
Upgrade Bulwark Webmail to version 1.4.11 or later immediately. Verify that checkChain parameter is enabled in S/MIME signature verification configuration. Implement email security policies requiring validated certificate chains and disable acceptance of self-signed certificates for critical communications.
🔧 خطوات المعالجة (العربية)
قم بترقية Bulwark Webmail إلى الإصدار 1.4.11 أو أحدث فوراً. تحقق من تفعيل معامل checkChain في إعدادات التحقق من توقيع S/MIME. طبق سياسات أمان البريد الإلكتروني التي تتطلب سلاسل شهادات موثقة وعطل قبول الشهادات الموقعة ذاتياً للاتصالات الحرجة.
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
3.1.1 3.2.1
🔵 SAMA CSF
ID.SC-4 PR.DS-2
🟡 ISO 27001:2022
A.10.1.1 A.12.6.1
📦 Affected Products / CPE 1 entries
bulwarkmail:webmail
📊 CVSS Score
7.5
/ 10.0 — High
📊 CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack VectorN — None / Network
Attack ComplexityL — Low / Local
Privileges RequiredN — None / Network
User InteractionN — None / Network
ScopeU — Unchanged
ConfidentialityN — None / Network
IntegrityH — High
AvailabilityN — None / Network
📋 Quick Facts
Severity High
CVSS Score7.5
CWECWE-295
EPSS0.02%
Exploit No
Patch ✗ No
Published 2026-04-06
Source Feed nvd
Views 4
🇸🇦 Saudi Risk Score
7.0
/ 10.0 — Saudi Risk
Priority: HIGH
🏷️ Tags
CWE-295
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