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CVE-2026-92594 – Sensitive Information Disclosure (PII via GraphQL) – Craft CMS 5.0.0–5.10.x

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Summary

CVE-2026-92594 is an unauthenticated information disclosure vulnerability in Craft CMS’s GraphQL API, caused by improper field-level authorization on the draftCreator and revisionCreator fields. It affects Craft CMS 5.0.0-RC1 through versions before 5.11.0 and carries a HIGH severity rating (CVSS v4.0 base score 8.7). When a site’s public GraphQL schema exposes draft or revision data, an attacker with no credentials can harvest personal information belonging to draft and revision creators — typically site editors and administrators.

Technical details

  • Root cause: The draftCreator and revisionCreator GraphQL resolvers are authorized only against the elements.drafts:read and elements.revisions:read scopes, rather than the usergroups.*:read user-data scope normally enforced by Craft’s Gql::canQueryUsers() check.
  • Trigger conditions: The resolvers return a raw User element whose email, username, fullName, and addresses fields carry no per-field authorization. Any client — including an unauthenticated one — holding only the drafts or revisions GraphQL scope can query these fields directly.
  • Attack vector: Network-based, requiring no authentication, no privileges, and no user interaction. Exploitation requires that the site operator has enabled the public GraphQL schema with drafts or revisions scopes.
  • Impact: Disclosure of sensitive personal information (email addresses, usernames, full names, and postal addresses) of draft and revision creators, with no impact on integrity or availability.

Affected software

  • Craft CMS 5.0.0-RC1 up to (but not including) 5.11.0
  • Fixed in Craft CMS 5.11.0

Severity

  • CVSS v3.1 Base Score: 7.5 (High) — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
  • CVSS v4.0 Base Score: 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

Mitigation and recommended actions

  • Immediate: Upgrade Craft CMS to version 5.11.0 or later, which fixes the field-level authorization on draftCreator and revisionCreator.
  • If immediate patching is not possible: Disable or restrict the public GraphQL schema, or remove the elements.drafts:read and elements.revisions:read scopes from any publicly accessible GraphQL token until the upgrade can be applied. Review GraphQL access logs for anomalous queries against draftCreator or revisionCreator fields.

References

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