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    CVE-2026-116166

    SiYuan 3.6.0 before 3.8.7 accepts and persists the networkServeTLS setting but never enforces it, so the kernel port keeps serving full API access over plain HTTP alongside HTTPS. Network-adjacent attackers can sniff the cleartext login flow and session cookie, which lacks the Secure attribute while responses omit HSTS, to hijack kernel API sessions.

    Published:Oct 25, 2026
    Last Modified:Oct 25, 2026
    EPS:Oct 25, 2026
    EPSS Score:
    CVSS Score:6.8

    Affected Products

    Vendor
    B3log
    Product
    Siyuan

    Exploits

    No exploit reference

    Related CVEs

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    CVE-2026-116168 (CVSS 6.9) — SiYuan before 3.8.7 contains a path traversal vulnerability in the MCP asset tool because validateAssetUploadP…
    CVE-2026-116167 (CVSS 7.6) — SiYuan from 2.9.0 before 3.8.7 contains a cross-site scripting vulnerability in the unauthenticated /check-aut…
    CVE-2026-109310 (CVSS 7.1) — SiYuan v3.1.12 before v3.8.6 fails to restrict the Sprig template function map in the /api/icon/getDynamicIcon…
    CVE-2026-109309 (CVSS 6.9) — SiYuan v3.7.0 before v3.8.6 contains an absolute path traversal vulnerability in the kernel's private plugin H…
    CVE-2026-105205 (CVSS 6.9) — SiYuan before 3.8.5 contains an information disclosure vulnerability that allows publish-mode readers to learn…
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    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