CVE-2026-100637 — SiYuan before v3.8.4 Path Traversal via checkoutRepo sessionID
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 worksp…
Published: 2026-09-26 · CVSS: 8.3 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7