rootpwn

high · CVSS v3 4.7 · CVSS v4 8.6

CVE-2026-100640

SiYuan before v3.8.4 contains an authorization omission in the siyuan-get IPC handler that allows remote-kernel renderer…

Description

SiYuan before v3.8.4 contains an authorization omission in the siyuan-get IPC handler that allows remote-kernel renderers to access native clipboard formats by invoking clipboardReadMathML, clipboardReadOffice, and clipboardReadWPS commands with matching plaintext. Attackers controlling remote renderer content can obtain MathML formulas, Office bytes, and WPS bytes from local clipboard during user-mediated paste operations.

Scores

Severity
high
CVSS v2
5
CVSS v3
4.7
CVSS v4
8.6
EPSS
—

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