HIGHVulnerability
Verified
Global

NVD HIGH: CVE-2026-100642 — SiYuan versions from v2.1.0 before v3.8.4 contain a cross-site request forgery v...

·Source: NIST NVD

Updated:

Executive Summary

SiYuan versions from v2.1.0 before v3.8.4 contain a cross-site request forgery vulnerability in the CheckAuth lock-screen pass-through branch that grants administrator access to loopback requests without validating Origin headers. Attackers can craft malicious web pages that force victims to terminate the kernel process, read workspace configuration and proxy settings, and trigger administrative a

Analysis

SiYuan versions from v2.1.0 before v3.8.4 contain a cross-site request forgery vulnerability in the CheckAuth lock-screen pass-through branch that grants administrator access to loopback requests without validating Origin headers. Attackers can craft malicious web pages that force victims to terminate the kernel process, read workspace configuration and proxy settings, and trigger administrative actions via zero-credential cross-origin requests from the victim's browser. CVSS Score: 7.6. Published: 2026-09-26T14:16:46.247.

Indicators of Compromise (1)

CVE (1)
CVE-2026-100642
NVDMITRE CVE
Source Attribution

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

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