medium5.3
CVE-2026-87810
Siyuan before v3.8.2 contains an information disclosure vulnerability in the POST /api/search/fullTextSearchBlock endpoint that filters private blocks from res…
Impact
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publish-mode readers can submit arbitrary search terms to learn whether matching content exists in hidden or unpublished documents and determine the number of matching blocks and pages.
Affected products
| Product | Affected versions |
|---|---|
| Siyuan | before 3.8.2 |
Versions were read from the advisory text. No structured product data has been published for this record yet.