CVE-2026-63399

    Dashboard / Vulnerabilities / CVE-2026-63399

    CVE-2026-63399

    Published: 30 Oct 2026Last Modified: 8 Nov 2026

    Summary: Coop: Unauthenticated org provisioning via GraphQL Mutation.createOrg

    Details: Coop is an open source review and moderation tool from ROOST. Prior to 1.0.0, the `GraphQL` `Mutation.createOrg` operation allows an unauthenticated actor to create arbitrary organizations on a publicly accessible instance. In addition to creating noise in the logs, the lack of rate limiting could potentially lead to database exhaustion. Running the service on an authenticated private network prevents outside actors from directly querying the `GraphQL` API. This issue is fixed in version 1.0.0.

    References: https://github.com/roostorg/coop/releases/tag/1.0.0, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63399.json, https://github.com/roostorg/coop/security/advisories/GHSA-jcph-g6qv-g475, https://nvd.nist.gov/vuln/detail/CVE-2026-63399, https://github.com/roostorg/coop/commit/b29242f12f5acca0ac26116c30be9da77c15d93c, https://github.com/roostorg/coop/pull/699

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -5e21eb58350a0ca0de45268acba71f11d163f03e

    Affected versions

    0.1

    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-2026-63399 | CVE-DB