CVE-2026-63399CWE-306CWE-799

Coop: Unauthenticated org provisioning via GraphQL Mutation.createOrg

Medium · published October 30, 2026

CVSS v4.0
6.9
EPSS
—
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
6.9 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
EPSS
Not scored
Weaknesses
CWE-306 · Missing Authentication for Critical Function; CWE-799 · Improper Control of Interaction Frequency
Published
2026-10-30T22:40Z
Timeline
  • 30 OCT 22:40Z
    Coop: Unauthenticated org provisioning via GraphQL Mutation.createOrg
    cvelistv5
  • 30 OCT 22:40Z
    Coop: Unauthenticated org provisioning via GraphQL Mutation.createOrg
    cvelistv5