CVE-2025-67488

Unknown Unknown - Not Provided

BaseFortify

Publication date: 2025-12-09

Last updated on: 2025-12-09

Assigner: GitHub, Inc.

Description

SiYuan is self-hosted, open source personal knowledge management software. Versions 0.0.0-20251202123337-6ef83b42c7ce and below contain function importZipMd which is vulnerable to ZipSlips, allowing an authenticated user to overwrite files on the system. An authenticated user with access to the import functionality in notes is able to overwrite any file on the system, and can escalate to full code execution under some circumstances. A fix is planned for version 3.5.0.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2025-12-09

Last Modified

2025-12-09

Generated

2026-07-06

AI Q&A

2025-12-10

EPSS Evaluated

2026-07-05

NVD

CVE-2025-67488

EUVD

EUVD-2025-202175

Affected Vendors & Products

Vendor	Product	Version / Range
siyuan	siyuan	3.5.0
siyuan	siyuan	0.0.0-20251202123337-6ef83b42c7ce
siyuan	siyuan	3.1

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-22	The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

Attack-Flow Graph

Mitigation Strategies

Immediate mitigation steps include restricting or disabling the importZipMd functionality to prevent authenticated users from importing potentially malicious zip files. Limit access to the import feature to trusted users only. Monitor and audit file changes on the system to detect unauthorized overwrites. Plan to upgrade to version 3.5.0 once it is released, as it contains the fix for this vulnerability.

Executive Summary

This vulnerability exists in the importZipMd function of SiYuan software versions up to 0.0.0-20251202123337-6ef83b42c7ce. It is a ZipSlip vulnerability that allows an authenticated user to overwrite files on the system by exploiting the import functionality in notes. Under certain conditions, this can lead to full code execution.

Impact Analysis

An attacker who is authenticated and has access to the import functionality can overwrite any file on the system, potentially leading to data loss, system instability, or full code execution, which could compromise the entire system.

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