CVE-2026-85579 | BDVDB-2026-368341 Detail

Description#

SiYuan is affected by an information disclosure vulnerability (confirmed in v3.8.1, fixed in v3.8.2) in the reader-accessible POST /api/transactions/undoState endpoint. The endpoint returns the peekMutatedRootIDs list from the global undo-log stack for a caller-supplied root ID without applying publish-access visibility filtering. An authenticated reader who knows the root ID of a visible document can obtain the internal root IDs of other documents (including private or unpublished ones) modified in the same cross-document transaction, disclosing internal identifiers and cross-document relationships. Document body contents are not directly exposed.

Impact#

Weaknesses#

References#

Exploit#

History#

1. Version 12026-09-04Record published in the CVE List.
2. Version 22026-09-08Most recent update recorded in the CVE List.