NVD HIGH: CVE-2026-100637 — SiYuan versions before v3.8.4 contain a path traversal vulnerability in the chec...

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

Updated: Tuesday, September 29, 2026 at 09:00 PM UTC

Executive Summary

SiYuan versions before v3.8.4 contain a path traversal vulnerability in the checkoutRepo endpoint that allows authenticated administrators to write JSON files outside the workspace. Attackers can supply a sessionID parameter containing directory traversal sequences to overwrite arbitrary JSON files in pre-existing kernel-writable directories outside workspace boundaries.

Analysis

Indicators of Compromise (1)

CVE (1)

CVE-2026-100637

NVD MITRE CVE

Source Attribution

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

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