CVE-2026-63399

UNKNOWN 0.0

Coop: Unauthenticated org provisioning via GraphQL Mutation.createOrg

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-306 CWE-799
Vendor	roostorg
Product	coop
Published	Oct 30, 2026

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Affected Versions

roostorg / coop

< 1.0.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/roostorg/coop/security/advisories/GHSA-jcph-g6qv-g475 github.com: https://github.com/roostorg/coop/pull/699 github.com: https://github.com/roostorg/coop/commit/b29242f12f5acca0ac26116c30be9da77c15d93c github.com: https://github.com/roostorg/coop/releases/tag/1.0.0