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Global vulnerability → Information Technology / Cybersecurity CRITICAL 2h Global malware → Energy and Utilities CRITICAL 2h Global ransomware → Multiple sectors CRITICAL 3h Global vulnerability → Industrial Control Systems / IoT / Infrastructure CRITICAL 5h Global supply_chain → Information Technology and Critical Infrastructure CRITICAL 5h Global phishing → Multiple sectors HIGH 6h Global insider → Cybersecurity Services CRITICAL 6h Global ransomware → Multiple sectors (U.S. companies) CRITICAL 6h Global malware → Financial Services, Cryptocurrency CRITICAL 7h Global malware → Technology and Cloud Services HIGH 7h Global vulnerability → Information Technology / Cybersecurity CRITICAL 2h Global malware → Energy and Utilities CRITICAL 2h Global ransomware → Multiple sectors CRITICAL 3h Global vulnerability → Industrial Control Systems / IoT / Infrastructure CRITICAL 5h Global supply_chain → Information Technology and Critical Infrastructure CRITICAL 5h Global phishing → Multiple sectors HIGH 6h Global insider → Cybersecurity Services CRITICAL 6h Global ransomware → Multiple sectors (U.S. companies) CRITICAL 6h Global malware → Financial Services, Cryptocurrency CRITICAL 7h Global malware → Technology and Cloud Services HIGH 7h Global vulnerability → Information Technology / Cybersecurity CRITICAL 2h Global malware → Energy and Utilities CRITICAL 2h Global ransomware → Multiple sectors CRITICAL 3h Global vulnerability → Industrial Control Systems / IoT / Infrastructure CRITICAL 5h Global supply_chain → Information Technology and Critical Infrastructure CRITICAL 5h Global phishing → Multiple sectors HIGH 6h Global insider → Cybersecurity Services CRITICAL 6h Global ransomware → Multiple sectors (U.S. companies) CRITICAL 6h Global malware → Financial Services, Cryptocurrency CRITICAL 7h Global malware → Technology and Cloud Services HIGH 7h

Vulnerabilities ›

CVE-2026-23850

High ⚡ Exploit Available

SiYuan is a personal knowledge management system. In versions prior to 3.5.4, the markdown feature allows unrestricted server side html-rendering which allows arbitrary file read (LFD). Version 3.5.4

CWE-22 — Weakness Type

                    Published: Jan 19, 2026                      ·  Modified: Feb 28, 2026                      ·  Source: NVD                

CVSS v3

7.5

🔗 NVD Official

📄 Description (English)

SiYuan is a personal knowledge management system. In versions prior to 3.5.4, the markdown feature allows unrestricted server side html-rendering which allows arbitrary file read (LFD). Version 3.5.4 fixes the issue.

🤖

Queued for AI Analysis

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

🔗 References & Sources 6

https://github.com/siyuan-note/siyuan/blob/master/kernel/model/file.go#L1035

security-advisories@github.com

https://github.com/siyuan-note/siyuan/blob/v3.4.2/kernel/api/filetree.go#L799-L886

security-advisories@github.com

https://github.com/siyuan-note/siyuan/commit/b2274baba2e11c8cf8901b0c5c871e5b27f1f6dd

security-advisories@github.com

https://github.com/siyuan-note/siyuan/commit/f8f4b517077b92c90c0d7b51ac11be1b34b273ad

security-advisories@github.com

https://github.com/siyuan-note/siyuan/issues/16860

security-advisories@github.com

Issue Tracking Patch

https://github.com/siyuan-note/siyuan/security/advisories/GHSA-cv54-7wv7-qxcw

security-advisories@github.com

Exploit Patch Vendor Advisory

📦 Affected Products / CPE 1 entries

b3log:siyuan

📊 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-22

EPSS0.06%

Exploit ✓ Yes

Patch ✓ Yes

Published 2026-01-19

Source Feed nvd

Views 2

🏷️ Tags

exploit-available patch-available CWE-22

🏢 Vendor Advisories

🔗 https://github.com/siyuan-note/siyuan/security/advis...

⚡ Actions

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

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