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    CVE-2026-87807

    siyuan versions before v3.8.2 contain an authenticated SQL injection vulnerability in the fullTextSearchBlock endpoint's method=1 query parameter. Attackers can inject UNION SELECT statements to read the entire blocks table, bypassing publish-access controls and exposing all document content and sensitive attributes.

    Published:Sep 9, 2026
    Last Modified:Sep 10, 2026
    EPS:Sep 9, 2026
    EPSS Score:0.00266
    CVSS Score:7.5

    Affected Products

    Vendor
    B3log
    Product
    Siyuan
    Vendor
    Siyuan
    Product
    Siyuan

    Exploits

    No exploit reference

    Related CVEs

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    CVE-2026-87813 (CVSS 8.4) — SiYuan before v3.8.2 contains a stored cross-site scripting vulnerability in the Search Assets result list whe…
    CVE-2026-87812 (CVSS 7.4) — SiYuan before v3.8.2 contains a stored cross-site scripting vulnerability in Bazaar package cards where the ic…
    CVE-2026-87811 (CVSS 8.4) — SiYuan before v3.8.2 inserts persisted notebook template paths into HTML input value attributes without proper…
    CVE-2026-87810 (CVSS 6.9) — Siyuan before v3.8.2 contains an information disclosure vulnerability in the POST /api/search/fullTextSearchBl…
    CVE-2026-87809 (CVSS 7.1) — Siyuan before v3.8.2 fails to apply publish-access filtering to embedded blocks before rendering in the /api/e…
    CVE-2026-87808 (CVSS 8.7) — SiYuan versions <= 3.8.1 contain an incomplete fix for CVE-2026-32767 (GHSA-j7wh-x834-p3r7). The prior fix (co…
    CVE-2026-86712 (CVSS 8.6) — SiYuan before 3.8.2 trusts the attacker-writable text/siyuan clipboard MIME type and skips sanitization in the…
    CVE-2026-86192 (CVSS 7.1) — SiYuan versions before v3.8.2 fail to properly filter private attribute-view cell values in the getAttributeVi…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High