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Global vulnerability → Industrial Control Systems / IoT / Infrastructure CRITICAL 2h Global supply_chain → Information Technology and Critical Infrastructure CRITICAL 3h Global phishing → Multiple sectors HIGH 3h Global insider → Cybersecurity Services CRITICAL 3h Global ransomware → Multiple sectors (U.S. companies) CRITICAL 4h Global malware → Financial Services, Cryptocurrency CRITICAL 4h Global malware → Technology and Cloud Services HIGH 4h Global general → Financial Services and E-commerce MEDIUM 4h Global data_breach → Social Media and Communications CRITICAL 4h Global general → Cybersecurity Operations HIGH 5h Global vulnerability → Industrial Control Systems / IoT / Infrastructure CRITICAL 2h Global supply_chain → Information Technology and Critical Infrastructure CRITICAL 3h Global phishing → Multiple sectors HIGH 3h Global insider → Cybersecurity Services CRITICAL 3h Global ransomware → Multiple sectors (U.S. companies) CRITICAL 4h Global malware → Financial Services, Cryptocurrency CRITICAL 4h Global malware → Technology and Cloud Services HIGH 4h Global general → Financial Services and E-commerce MEDIUM 4h Global data_breach → Social Media and Communications CRITICAL 4h Global general → Cybersecurity Operations HIGH 5h Global vulnerability → Industrial Control Systems / IoT / Infrastructure CRITICAL 2h Global supply_chain → Information Technology and Critical Infrastructure CRITICAL 3h Global phishing → Multiple sectors HIGH 3h Global insider → Cybersecurity Services CRITICAL 3h Global ransomware → Multiple sectors (U.S. companies) CRITICAL 4h Global malware → Financial Services, Cryptocurrency CRITICAL 4h Global malware → Technology and Cloud Services HIGH 4h Global general → Financial Services and E-commerce MEDIUM 4h Global data_breach → Social Media and Communications CRITICAL 4h Global general → Cybersecurity Operations HIGH 5h

Vulnerabilities ›

CVE-2026-23743

High

Discourse is an open source discussion platform. In versions prior to 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0, permalinks pointing to access-restricted resources (private topics, categories, posts,

CWE-200 — Weakness Type

                    Published: Jan 28, 2026                      ·  Modified: Feb 28, 2026                      ·  Source: NVD                

CVSS v3

7.5

🔗 NVD Official

📄 Description (English)

Discourse is an open source discussion platform. In versions prior to 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0, permalinks pointing to access-restricted resources (private topics, categories, posts, or hidden tags) were redirecting users to URLs containing the resource slug, even when the user didn't have access to view the resource. This leaked potentially sensitive information (e.g., private topic titles) via the redirect Location header and the 404 page's search box. This issue is patched in versions 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0. No known workarounds are available.

🤖

Queued for AI Analysis

This CVE will be auto-analyzed on the next cron run.

🔗 References & Sources 1

https://github.com/discourse/discourse/security/advisories/GHSA-v5jw-rxc6-4cvv

security-advisories@github.com

Third Party Advisory

📦 Affected Products / CPE 4 entries

discourse:discourse

discourse:discourse

discourse:discourse:2025.12.0

discourse:discourse:2026.1.0

📊 CVSS Score

7.5

/ 10.0 — High

📊 CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack VectorN — None / Network

Attack ComplexityL — Low / Local

Privileges RequiredN — None / Network

User InteractionN — None / Network

ScopeU — Unchanged

ConfidentialityH — High

IntegrityN — None / Network

AvailabilityN — None / Network

📋 Quick Facts

Severity High

CVSS Score7.5

CWECWE-200

EPSS0.04%

Exploit No

Patch ✓ Yes

Published 2026-01-28

Source Feed nvd

Views 1

🏷️ Tags

CWE-200

⚡ Actions

🔗 NVD Official Page ⚡ Exploit-DB Search 🐙 GitHub PoC Search 🎯 MITRE ATT&CK 📊 CVE Details

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