CVE-2026-84803 - CERT CVE
ID CVE-2026-84803
Sažetak SiYuan before v3.8.2 contains a stored cross-site scripting vulnerability in asset serving due to an incomplete extension blocklist that misses script-capable file types. Attackers can upload files with extensions like .xht, .ehtml, .xsl, .xbl, or .rdf that resolve to executable media types and execute JavaScript to steal API tokens and compromise workspaces.
Reference
CVSS
Base: 9.0
Impact: 6.0
Exploitability:2.3
Pristup
VektorSloženostAutentikacija
NETWORK LOW LOW
Impact
PovjerljivostCjelovitostDostupnost
HIGH HIGH HIGH
CVSS vektor CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
Zadnje važnije ažuriranje 02-09-2026 - 14:17
Objavljeno 02-09-2026 - 12:17