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    CVE-2025-64487

    Outline is a service that allows for collaborative documentation. Prior to 1.1.0, a privilege escalation vulnerability exists in the Outline document management system due to inconsistent authorization checks between user and group membership management endpoints. This vulnerability is fixed in 1.1.0.

    Published:Feb 11, 2026
    Last Modified:Feb 20, 2026
    EPS:Feb 11, 2026
    EPSS Score:0.00011
    CVSS Score:7.6

    Affected Products

    Vendor
    Getoutline
    Product
    Outline

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-269 Improper Privilege Management

    Related CVEs

    CVE-2026-54573 (CVSS 5.3) — Outline is a service that allows for collaborative documentation. Prior to 1.8.0, the AuthenticationHelper.can…
    CVE-2026-44695 (CVSS 5.8) — Outline is a service that allows for collaborative documentation. Prior to 1.7.1, the Slack integration callba…
    CVE-2026-43889 (CVSS 6.5) — Outline is a service that allows for collaborative documentation. Prior to 1.7.0, the shares.create API accept…
    CVE-2026-43888 (CVSS 8.7) — Outline is a service that allows for collaborative documentation. Prior to 1.7.0, ZipHelper.extract computes t…
    CVE-2026-43890 (CVSS 7.7) — Outline is a service that allows for collaborative documentation. From 0.84.0 to 1.7.0, the subscriptions.crea…
    CVE-2026-43886 (CVSS 8.2) — Outline is a service that allows for collaborative documentation. From 0.84.0 to 1.6.1, a logic error in OAuth…
    CVE-2026-43887 (CVSS 7.3) — Outline is a service that allows for collaborative documentation. From 0.84.0 to 1.6.1, the Outline comment se…
    CVE-2026-41649 (CVSS 7.7) — Outline is a service that allows for collaborative documentation. The `shares.create` API endpoint starting in…
    CVE-2026-33640 (CVSS 9.1) — Outline is a service that allows for collaborative documentation. Outline implements an Email OTP login flow f…
    CVE-2026-28506 (CVSS 4.3) — Outline is a service that allows for collaborative documentation. Prior to 1.5.0, the events.list API endpoint…

    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