CVE-2026-85582

    Dashboard / Vulnerabilities / CVE-2026-85582

    CVE-2026-85582

    Published: 4 Sept 2026Last Modified: 10 Sept 2026

    Summary: SiYuan before v3.8.2 Unbounded Session Creation via Basic Auth

    Details: SiYuan versions before v3.8.2 contain an unbounded session creation vulnerability in the publish-service Basic Auth handler that allows authenticated attackers to exhaust memory. Attackers can repeatedly authenticate with valid credentials to create persistent session entries without expiry or capacity limits, causing indefinite process memory growth and denial of service.

    References: https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/85xxx/CVE-2026-85582.json, https://github.com/siyuan-note/siyuan/security/advisories/GHSA-f4vj-ppp2-5hg4, https://nvd.nist.gov/vuln/detail/CVE-2026-85582, https://www.vulncheck.com/advisories/siyuan-before-3.8.2-unbounded-session-creation-via-basic-auth

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -44a6c212a994c7ba8129fc38b001a9ab58957c6f

    Affected versions

    v3.8.2-beta.4
    v3.8.2-beta.3
    v3.8.2-beta.2
    v3.8.2-beta.1
    v3.8.2-alpha.6
    v3.8.2-alpha.5
    v3.8.2-alpha.4
    v3.8.2-alpha.3
    v3.8.2-alpha.1
    v3.8.1
    v3.8.1-beta.6
    v3.8.1-beta.5
    v3.8.1-beta.4
    v3.8.1-beta.1
    v3.8.0
    v3.8.0-beta.2
    v3.8.0-alpha.4
    v3.8.0-alpha.3
    v3.8.0-alpha.2

    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
    CVE-2026-85582 | CVE-DB