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Global insider Education HIGH 58m Global supply_chain Software Development and Technology HIGH 5h Global apt Government/Critical Infrastructure CRITICAL 7h Global vulnerability Enterprise Software / Data Analytics CRITICAL 8h Global vulnerability Artificial Intelligence and Technology HIGH 11h Global general Technology and Artificial Intelligence MEDIUM 15h Global general Technology and Artificial Intelligence HIGH 16h Global vulnerability Higher Education CRITICAL 1d Global data_breach Government HIGH 1d Global supply_chain Software Development and Open Source Communities CRITICAL 1d Global insider Education HIGH 58m Global supply_chain Software Development and Technology HIGH 5h Global apt Government/Critical Infrastructure CRITICAL 7h Global vulnerability Enterprise Software / Data Analytics CRITICAL 8h Global vulnerability Artificial Intelligence and Technology HIGH 11h Global general Technology and Artificial Intelligence MEDIUM 15h Global general Technology and Artificial Intelligence HIGH 16h Global vulnerability Higher Education CRITICAL 1d Global data_breach Government HIGH 1d Global supply_chain Software Development and Open Source Communities CRITICAL 1d Global insider Education HIGH 58m Global supply_chain Software Development and Technology HIGH 5h Global apt Government/Critical Infrastructure CRITICAL 7h Global vulnerability Enterprise Software / Data Analytics CRITICAL 8h Global vulnerability Artificial Intelligence and Technology HIGH 11h Global general Technology and Artificial Intelligence MEDIUM 15h Global general Technology and Artificial Intelligence HIGH 16h Global vulnerability Higher Education CRITICAL 1d Global data_breach Government HIGH 1d Global supply_chain Software Development and Open Source Communities CRITICAL 1d
Vulnerabilities

CVE-2026-26979

Low
Discourse is an open source discussion platform. Prior to versions 2025.12.2, 2026.1.1, and 2026.2.0, TL4 users are able to close, archive and pin topics in private categories they don't have access t
CWE-862 — Weakness Type
Published: Feb 26, 2026  ·  Modified: Mar 5, 2026  ·  Source: NVD
CVSS v3
2.7
🔗 NVD Official
📄 Description (English)

Discourse is an open source discussion platform. Prior to versions 2025.12.2, 2026.1.1, and 2026.2.0, TL4 users are able to close, archive and pin topics in private categories they don't have access to. Versions 2025.12.2, 2026.1.1, and 2026.2.0 patch the issue. No known workarounds are available.

🤖 AI Executive Summary

Discourse versions prior to 2025.12.2, 2026.1.1, and 2026.2.0 allow TL4 users to close, archive, and pin topics in private categories without proper access control. This authorization bypass vulnerability could enable unauthorized modifications to restricted discussion content.

📄 Description (Arabic)

تسمح هذه الثغرة لمستخدمي المستوى الرابع (TL4) في منصة Discourse بتنفيذ إجراءات إدارية على المواضيع في الفئات الخاصة التي لا يملكون صلاحيات الوصول إليها. يشمل ذلك إغلاق المواضيع وأرشفتها وتثبيتها، مما يؤدي إلى تجاوز آليات التحكم في الوصول.

🤖 ملخص تنفيذي (AI)

إصدارات Discourse السابقة للإصدارات 2025.12.2 و 2026.1.1 و 2026.2.0 تسمح لمستخدمي TL4 بإغلاق وأرشفة وتثبيت المواضيع في الفئات الخاصة دون التحكم في الوصول المناسب. قد يمكن هذا الثغرة الموثوقة من التعديلات غير المصرح بها على محتوى النقاش المقيد.

🤖 AI Intelligence Analysis Analyzed: May 30, 2026 08:54
🇸🇦 Saudi Arabia Impact Assessment
Saudi Relevance: medium
🏢 Affected Saudi Sectors
government telecom
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
3.0
/ 10.0
🔧 Remediation Steps (English)
Update Discourse to version 2025.12.2, 2026.1.1, or 2026.2.0 or later immediately. Verify access control configurations for private categories and audit recent topic modifications by TL4 users.
🔧 خطوات المعالجة (العربية)
قم بتحديث Discourse إلى الإصدار 2025.12.2 أو 2026.1.1 أو 2026.2.0 أو أحدث على الفور. تحقق من تكوينات التحكم في الوصول للفئات الخاصة وراجع التعديلات الأخيرة على المواضيع من قبل مستخدمي TL4.
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
A.9.2.1
🔵 SAMA CSF
AC-3
🟡 ISO 27001:2022
A.9.2.1 A.9.4.3
📦 Affected Products / CPE 3 entries
discourse:discourse
discourse:discourse
discourse:discourse:2026.2.0
📊 CVSS Score
2.7
/ 10.0 — Low
📊 CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N
Attack VectorN — None / Network
Attack ComplexityL — Low / Local
Privileges RequiredH — High
User InteractionN — None / Network
ScopeU — Unchanged
ConfidentialityN — None / Network
IntegrityL — Low / Local
AvailabilityN — None / Network
📋 Quick Facts
Severity Low
CVSS Score2.7
CWECWE-862
Exploit No
Patch ✗ No
Published 2026-02-26
Source Feed nvd
Views 5
🇸🇦 Saudi Risk Score
3.0
/ 10.0 — Saudi Risk
Priority: LOW
🏷️ Tags
CWE-862
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