CVE-2026-72828: Grav before 1.0.13 API Key Scope Bypass via InvitationsController

Severity: high (CVSS 7.2 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-14 · updated 2026-08-31
Weakness: CWE-269

Description

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.

Affected products

getgrav grav: before 1.0.13 — fixed in 1.0.13

How to fix

Upgrade to a fixed version: getgrav grav 1.0.13. Check the vendor advisory for mitigations.

References

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