Is this vulnerability remotely exploitable?

It can be, depending on how SiYuan is deployed. If the `/api/file/readDir` endpoint is accessible over the network without strong access controls, a remote attacker could exploit it to enumerate document names. In local-only deployments, the risk is primarily from local or same-machine processes and users.

What level of access does an attacker need?

An attacker generally needs the ability to issue HTTP requests to the SiYuan API. In some configurations, this might mean local browser access; in others, authenticated or same-network access may be required. The key factor is whether the attacker can reach `/api/file/readDir` and control its parameters.

What is the safest general fix pattern?

The safest pattern is to strictly bind all file operations to controlled root directories, canonicalize and validate paths against those roots, and ensure that only authorized users can list directories for specific notebooks. Avoid exposing raw file system paths or allowing arbitrary path input from clients.

Severity:

CRITICAL RISK

(9.8)

Directory Traversal (CWE-22) in SiYuan Notebook File Enumeration API

CVE-2026-33670

Published:

Mar 26, 2026

Status:

Analyzed

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

Recent Vulnerabilities

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

Remote Code Execution on the Router

April 6, 2026

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Remote Code Execution on Router Firmware

April 6, 2026

Vulnerability Type

Category:

Directory Traversal

CWE:

CWE-22

Impact:

Unauthorized File System Enumeration / Information Disclosure

Severity:

CRITICAL RISK

(9.8)

CVSS Version:

3.1

Vulnerability Type

Category:

Directory Traversal

CWE:

CWE-22

Impact:

Unauthorized File System Enumeration / Information Disclosure

Severity:

CRITICAL RISK

(9.8)

CVSS Version:

3.1

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Ask AI for summary of CodeAnt

Directory Traversal (CWE-22) in SiYuan Notebook File Enumeration API

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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