# CVE-2026-63396: Coop has a data leak via unauthenticated GraphQL Query.allOrgs

Status: published. Published: 2026-10-30. Updated: 2026-11-02.

Coop is an open source review and moderation tool from ROOST. Prior to 1.0.0, an unauthenticated actor can query `Query.allOrgs` through `/api/v1/graphql` on a publicly accessible deployment and obtain data for all organizations, including organization IDs, names, email addresses, website URLs and on-call alert email addresses. The `usersWhoCanReviewEveryQueue` field also exposes reviewing users' IDs, email addresses, first and last names, roles, permissions and creation dates. 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.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- roostorg / coop: < 1.0.0 (affected). Source: CNA: GitHub_M

## Severity and prioritization

- CVSS 4.0: 8.7 (high); CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N; source: CNA: GitHub_M

- CISA KEV: No listing in collected sources

- EPSS: 0.31% as of 2026-11-02; percentile 23.93%

- SSVC: exploitation none; automatable yes; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-306

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://github.com/roostorg/coop/security/advisories/GHSA-gv85-m34f-27g4 (CNA: GitHub_M; x_refsource_CONFIRM)

- https://github.com/roostorg/coop/pull/699 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/roostorg/coop/commit/b29242f12f5acca0ac26116c30be9da77c15d93c (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/roostorg/coop/releases/tag/1.0.0 (CNA: GitHub_M; x_refsource_MISC)

## Provenance

- CNA: GitHub_M: https://www.cve.org/CVERecord?id=CVE-2026-63396; retrieved 2026-11-02; source updated 2026-11-02

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-63396; retrieved 2026-11-02; source updated Not reported

Revision: 6dde881805bf2cb32a80cc0ceb545253ea6a853c695d303f8c6758f36c159052

Canonical: https://y2.dev/cve/CVE-2026-63396

## Agent and API access

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- OpenAPI: https://y2.dev/api/openapi.yaml. Agent access metadata: https://y2.dev/cve/agent.json.

Collected public records only. Check source status for coverage and freshness.