CVE-2026-100638

HIGHCVSS 7.6

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.

Published 2026-09-26 · last modified 2026-09-26

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Ncerio by BeyondNets · data from NVD, CISA KEV, EPSS.