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

Saturday, September 26, 2026 at 02:16 PM UTC·Source: NIST NVD

Updated: Wednesday, September 30, 2026 at 02:00 AM UTC

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

Indicators of Compromise (1)

CVE (1)

CVE-2026-100638

NVD MITRE CVE

Source Attribution

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

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