CVE-2026-23850

HIGH
2026-01-19 [email protected] GHSA-cv54-7wv7-qxcw
7.5
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

Lifecycle Timeline

4
Analysis Generated
Mar 12, 2026 - 21:54 vuln.today
PoC Detected
Jan 30, 2026 - 15:35 vuln.today
Public exploit code
Patch Released
Jan 30, 2026 - 15:35 nvd
Patch available
CVE Published
Jan 19, 2026 - 20:15 nvd
HIGH 7.5

Tags

Path Traversal Siyuan Suse

Description

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.

Analysis

SiYuan versions before 3.5.4 allow unauthenticated remote attackers to read arbitrary files on the server through improper HTML rendering in the markdown feature. Public exploit code exists for this vulnerability, which has a CVSS score of 7.5. …

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Remediation

Within 7 days: Identify all affected systems running versions and apply vendor patches promptly. Review file handling controls and restrict upload directories.

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Priority Score

58
Low Medium High Critical
KEV: 0
EPSS: +0.1
CVSS: +38
POC: +20

Vendor Status

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CVE-2026-23850 vulnerability details – vuln.today
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