CVE Feed

    Dashboard / CVE / CVE-2026-77086

    CVE-2026-77086

    SiYuan before v3.7.4 fails to validate the packageName parameter in Bazaar install and uninstall endpoints, allowing authenticated administrators to perform path traversal via directory traversal sequences. Attackers with admin access can write arbitrary files to any location via install operations or recursively delete directories via uninstall operations by supplying crafted packageName values.

    Published:Aug 21, 2026
    Last Modified:Aug 21, 2026
    EPS:Aug 21, 2026
    EPSS Score:
    CVSS Score:9.1

    Affected Products

    Vendor
    Siyuan
    Product
    Siyuan

    Exploits

    No exploit reference

    Related CVEs

    CVE-2026-87814 (CVSS 8.4) — SiYuan before v3.8.2 contains a stored cross-site scripting vulnerability in the search asset preview feature …
    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-2026-87808 (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-2026-87807 (CVSS 8.7) — siyuan versions before v3.8.2 contain an authenticated SQL injection vulnerability in the fullTextSearchBlock …
    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…
    CVE-2026-86191 (CVSS 5.3) — SiYuan versions before v3.8.2 contain an information disclosure vulnerability in the getAttributeViewKeysByID …
    CVE-2026-85585 (CVSS 8.7) — SiYuan before v3.8.2 contains an unbounded resource consumption vulnerability in the request-concurrency middl…
    CVE-2026-85584 (CVSS 8.7) — SiYuan versions before v3.8.2 contain a denial of service vulnerability in the publish-service Basic Auth thro…

    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