HIGHVulnerability
Verified
Global

NVD HIGH: CVE-2026-100638 — SiYuan versions before v3.8.4 contain a path traversal vulnerability in the setN...

·Source: NIST NVD

Updated:

Executive Summary

SiYuan versions before v3.8.4 contain a path traversal vulnerability in the setNotebookIcon endpoint that allows authenticated administrators to create arbitrary directory trees and write files outside the workspace boundary. Attackers can supply directory traversal sequences in the notebook parameter to escape the workspace data directory and write conf.json files to arbitrary locations accessibl

Analysis

SiYuan versions before v3.8.4 contain a path traversal vulnerability in the setNotebookIcon endpoint that allows authenticated administrators to create arbitrary directory trees and write files outside the workspace boundary. Attackers can supply directory traversal sequences in the notebook parameter to escape the workspace data directory and write conf.json files to arbitrary locations accessible by the kernel process. CVSS Score: 7.6. Published: 2026-09-26T14:16:45.480.

Indicators of Compromise (1)

CVE (1)
CVE-2026-100638
NVDMITRE CVE
Source Attribution

Originally published by NIST NVD on Sep 26, 2026. Verified by: NIST.

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