CVE-2026-87810 — Siyuan before v3.8.2 Information Disclosure via fullTextSearchBlock
Siyuan before v3.8.2 contains an information disclosure vulnerability in the POST /api/search/fullTextSearchBlock endpoint that filters private blocks from results but returns u…
Published: 2026-09-09 · CVSS: 6.9 · CVSS 4.0
Siyuan before v3.8.2 contains an information disclosure vulnerability in the POST /api/search/fullTextSearchBlock endpoint that filters private blocks from results but returns unfiltered match counts. Unauthenticated publish-mode readers can submit arbitrary search terms to learn whether matching content exists in hidden or unpublished documents and determine the number of matching blocks and pages.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7