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Home / Vulnerability Intelligence / CVE-2026-33670

CVE-2026-33670 - Vulnerability Analysis

CriticalCVSS: 9.8

Last Updated: March 26, 2026

SiYuan - Path Traversal

Published: March 26, 2026Updated: March 26, 2026Remote Exploitable

Overview

SiYuan < 3.6.2 contains a path traversal caused by improper access control in /api/file/readDir interface, letting attackers retrieve file names of all documents under a notebook, exploit requires no special privileges.

Severity & Score

Severity: Critical
CVSS Score: 9.8
EPSS Score: 0.0%(Probability of exploitation in next 30 days)

Impact

Attackers can retrieve file names of all documents under a notebook, potentially exposing sensitive information.

Mitigation

Update to version 3.6.2 or later.

References

Social Media Activity(4 posts)

Offensive Sequence
Offensive Sequence
@offseq
Mar 26, 2026

šŸšØ CRITICAL: CVE-2026-33670 in SiYuan (<3.6.2) lets remote attackers exploit /api/file/readDir for path traversal, exposing sensitive files. Patch to 3.6.2+ ASAP! Details: https://radar.offseq.com/threat/cve-2026-33670-cwe-22-improper-limitation-of-a-pat-0880f67a #OffSeq #vuln #infosec #SiYuan

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TheHackerWire
TheHackerWire
@thehackerwire
Mar 26, 2026

šŸ”“ CVE-2026-33670 - Critical (9.8) SiYuan is a personal knowledge management system. Prior to version 3.6.2, the /api/file/readDir interface was used to traverse and retrieve the file names of all documents under a notebook. Version 3.6.2 patches the issue. šŸ”— https://www.thehackerwire.com/vulnerability/CVE-2026-33670/ #CVE #vulnerability #infosec #cybersecurity #security #Tenda #patchstack

View original post
Offensive Sequence
Offensive Sequence
@offseq
Mar 26, 2026

šŸšØ CRITICAL: CVE-2026-33670 in SiYuan (<3.6.2) lets remote attackers exploit /api/file/readDir for path traversal, exposing sensitive files. Patch to 3.6.2+ ASAP! Details: https://radar.offseq.com/threat/cve-2026-33670-cwe-22-improper-limitation-of-a-pat-0880f67a #OffSeq #vuln #infosec #SiYuan

View original post
TheHackerWire
TheHackerWire
@thehackerwire
Mar 26, 2026

šŸ”“ CVE-2026-33670 - Critical (9.8) SiYuan is a personal knowledge management system. Prior to version 3.6.2, the /api/file/readDir interface was used to traverse and retrieve the file names of all documents under a notebook. Version 3.6.2 patches the issue. šŸ”— https://www.thehackerwire.com/vulnerability/CVE-2026-33670/ #CVE #vulnerability #infosec #cybersecurity #security #Tenda #patchstack

View original post

Related Resources

Details

CVE ID
CVE-2026-33670
Severity
Critical
CVSS Score
9.8
Type
path_traversal
Status
new
EPSS
0.0%
Social Posts
4

CWE

  • CWE-22

CVSS Metrics

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

EPSS Score

0.0%Probability of exploitation in the next 30 days