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Global apt Managed Service Providers (MSPs) / IT Services HIGH 3h Global vulnerability Enterprise Software HIGH 4h Global general Cybersecurity Operations HIGH 4h Global general Cybersecurity Industry LOW 4h Global supply_chain Multiple Sectors CRITICAL 4h Global vulnerability Government/Federal Agencies HIGH 4h Global malware Enterprise/Multiple Sectors CRITICAL 4h Global data_breach E-commerce and Retail CRITICAL 5h Global vulnerability Government and Public Administration CRITICAL 5h Global vulnerability Physical Security and Surveillance CRITICAL 5h Global apt Managed Service Providers (MSPs) / IT Services HIGH 3h Global vulnerability Enterprise Software HIGH 4h Global general Cybersecurity Operations HIGH 4h Global general Cybersecurity Industry LOW 4h Global supply_chain Multiple Sectors CRITICAL 4h Global vulnerability Government/Federal Agencies HIGH 4h Global malware Enterprise/Multiple Sectors CRITICAL 4h Global data_breach E-commerce and Retail CRITICAL 5h Global vulnerability Government and Public Administration CRITICAL 5h Global vulnerability Physical Security and Surveillance CRITICAL 5h Global apt Managed Service Providers (MSPs) / IT Services HIGH 3h Global vulnerability Enterprise Software HIGH 4h Global general Cybersecurity Operations HIGH 4h Global general Cybersecurity Industry LOW 4h Global supply_chain Multiple Sectors CRITICAL 4h Global vulnerability Government/Federal Agencies HIGH 4h Global malware Enterprise/Multiple Sectors CRITICAL 4h Global data_breach E-commerce and Retail CRITICAL 5h Global vulnerability Government and Public Administration CRITICAL 5h Global vulnerability Physical Security and Surveillance CRITICAL 5h
Vulnerabilities

CVE-2026-44549

High ⚡ Exploit Available
CWE-79 — Weakness Type
Published: May 15, 2026  ·  Modified: May 22, 2026  ·  Source: NVD
CVSS v3
7.3
🔗 NVD Official
📄 Description (English)

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.8.0, Excel file attachments are previewed in an unsafe way. A crafted XLSX file payload can be used to cause the sheetjs function sheet_to_html to embed an XSS payload into the generated HTML. This is subsequently added to the DOM unsanitized via @html causing the payload to trigger. This vulnerability is fixed in 0.8.0.

🤖 AI Executive Summary

Open WebUI versions prior to 0.8.0 contain a stored XSS vulnerability in Excel file preview functionality where crafted XLSX files can inject malicious scripts. The vulnerability exploits unsafe HTML generation from sheet_to_html function without proper sanitization before DOM insertion.

📄 Description (Arabic)

تحتوي ثغرة CVE-2026-44549 على عيب في معالجة ملفات Excel في منصة Open WebUI حيث يمكن لملف XLSX مصنع بعناية أن يحقن رمز JavaScript ضار. يتم تنفيذ الحمولة الضارة عند معاينة الملف دون تصفية أو تنظيف مناسب للمحتوى.

🤖 ملخص تنفيذي (AI)

إصدارات Open WebUI السابقة للإصدار 0.8.0 تحتوي على ثغرة XSS مخزنة في وظيفة معاينة ملفات Excel حيث يمكن لملفات XLSX المصنعة حقن برامج نصية ضارة. تستغل الثغرة إنشاء HTML غير آمن من وظيفة sheet_to_html بدون تنظيف مناسب قبل إدراجها في DOM.

🤖 AI Intelligence Analysis Analyzed: May 21, 2026 02:02
🇸🇦 Saudi Arabia Impact Assessment
Saudi Relevance: high
🏢 Affected Saudi Sectors
government healthcare banking energy
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
7.0
/ 10.0
🔧 Remediation Steps (English)
Upgrade Open WebUI to version 0.8.0 or later immediately. Implement input validation and HTML sanitization for all file preview functions. Use security libraries like DOMPurify to sanitize HTML before DOM insertion. Disable Excel preview functionality if upgrade is not immediately possible.
🔧 خطوات المعالجة (العربية)
قم بترقية Open WebUI إلى الإصدار 0.8.0 أو أحدث على الفور. طبق التحقق من صحة الإدخال وتنظيف HTML لجميع وظائف معاينة الملفات. استخدم مكتبات الأمان مثل DOMPurify لتنظيف HTML قبل إدراجها في DOM. عطل وظيفة معاينة Excel إذا لم تكن الترقية ممكنة على الفور.
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
A.7.1.1 A.7.1.2 A.12.2.1
🔵 SAMA CSF
ID.RA-2 PR.DS-1 PR.DS-6
🟡 ISO 27001:2022
A.14.2.1 A.14.2.5
📦 Affected Products / CPE 1 entries
openwebui:open_webui
📊 CVSS Score
7.3
/ 10.0 — High
📊 CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
Attack VectorN — None / Network
Attack ComplexityL — Low / Local
Privileges RequiredL — Low / Local
User InteractionR — Required
ScopeU — Unchanged
ConfidentialityH — High
IntegrityH — High
AvailabilityN — None / Network
📋 Quick Facts
Severity High
CVSS Score7.3
CWECWE-79
EPSS0.03%
Exploit ✓ Yes
Patch ✗ No
Published 2026-05-15
Source Feed nvd
🇸🇦 Saudi Risk Score
7.0
/ 10.0 — Saudi Risk
Priority: HIGH
🏷️ Tags
exploit-available CWE-79
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