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Global insider Education HIGH 55m 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 55m 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 55m 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-2026-27151

Low
Discourse is an open source discussion platform. Prior to versions 2025.12.2, 2026.1.1, and 2026.2.0, the `move_posts` action only checked `can_move_posts?` on the source topic but never validated wri
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, the `move_posts` action only checked `can_move_posts?` on the source topic but never validated write permissions on the destination topic. This allowed TL4 users and category group moderators to move posts into topics in categories where they lack posting privileges (e.g., read-only categories or categories with group-restricted write access). 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 contain an authorization bypass vulnerability in the move_posts action that fails to validate write permissions on destination topics. TL4 users and category moderators could move posts into restricted categories where they lack posting privileges.

📄 Description (Arabic)

تفشل ميزة نقل المنشورات في Discourse في التحقق من صلاحيات الكتابة على الموضوع المقصود، مما يسمح للمستخدمين ذوي الامتيازات المتوسطة بنقل المنشورات إلى فئات محمية. يؤثر هذا على سلامة التحكم في الوصول إلى الفئات المقيدة والفئات ذات الوصول المحدود للمجموعات.

🤖 ملخص تنفيذي (AI)

إصدارات Discourse السابقة لـ 2025.12.2 و 2026.1.1 و 2026.2.0 تحتوي على ثغرة تجاوز التفويض في إجراء move_posts الذي لا يتحقق من صلاحيات الكتابة في المواضيع المقصودة. يمكن لمستخدمي TL4 والمشرفين نقل المنشورات إلى فئات مقيدة حيث يفتقرون إلى امتيازات النشر.

🤖 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. Review and audit recent post movements to identify any unauthorized transfers to restricted categories. Implement additional access control monitoring on category-level permissions.
🔧 خطوات المعالجة (العربية)
قم بتحديث Discourse إلى الإصدار 2025.12.2 أو 2026.1.1 أو 2026.2.0 أو إصدار أحدث. راجع وتدقيق حركات المنشورات الأخيرة لتحديد أي عمليات نقل غير مصرح بها إلى فئات مقيدة. قم بتنفيذ مراقبة إضافية للتحكم في الوصول على صلاحيات مستوى الفئة.
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
A.9.2.1 A.9.2.5
🔵 SAMA CSF
AC-3 AC-6
🟡 ISO 27001:2022
A.6.1.2 A.9.2.1
📦 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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