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CVE PROGRAM SOURCE RECORD9.3 Critical

CVE-2026-82654

SiYuan before v3.8.1 Stored XSS via block name

Description

SiYuan before v3.8.1 fails to properly escape block name, alias, and memo fields in hint, backlink, and breadcrumb rendering functions. Attackers can set a block's name to contain HTML/script tags that execute when another user views documents referencing or displaying that block.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

siyuan-note siyuan

Default version status: unaffected

  • 0 to < 3.8.1affected
  • 3.8.1unaffected

References