CVE-2026-72828

Grav Plugin API (getgrav/grav-plugin-api) before 1.0.13 fails to enforce API-key scope caps in InvitationsController. The strip-super and accept-groups decisions are gated on a bare isSuperAdmin() check rather than a scope-aware permission check, so a least-privilege API key (scoped to api.users.write) minted on a super account can create an invitation record containing super-admin access flags. When the invitation is accepted, those flags are written verbatim to the new account, resulting in privilege escalation to a fully controlled super account.

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Publisher and database URLs for this record (shown for attribution; reading stays in Bugflare).

• https://github.com/getgrav/grav/security/advisories/GHSA-wvpj-fg8h-843q
• https://www.vulncheck.com/advisories/grav-before-api-key-scope-bypass-via-invitationscontroller