PT-2026-88948 · Git+1 · Siyuan

CVE-2026-87810

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Published

2026-09-09

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Updated

2026-09-09

CVSS v4.0

6.9

Medium

VectorAV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
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publish-mode readers can submit arbitrary search terms to learn whether matching content exists in hidden or unpublished documents and determine the number of matching blocks and pages.

Exploit

Fix

Information Disclosure

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Weakness Enumeration

Related Identifiers

CVE-2026-87810
GHSA-G45V-HXVM-WCCJ

Affected Products

Siyuan