---
id: CVE-2026-65897
title: >-
  Grav API Plugin versions before 1.0.10 fail to validate the groups field in
  InvitationsController::create(), allowing authenticated api.users.write
  callers to assign invited accounts to groups that grant api.super permissions
summary: >-
  Grav API Plugin versions before 1.0.10 fail to validate the groups field in
  InvitationsController::create(), allowing authenticated api.users.write
  callers to assign invited accounts to groups that grant api.super permissions.
  Attackers …
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-269
published: '2026-07-23'
updated: '2026-08-28'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-65897'
references:
  - url: >-
      https://github.com/getgrav/grav-plugin-api/commit/f9438d4e71389b1041ac60b69b0b5714ecfa3bdd
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/getgrav/grav/commit/345e79e3abf8c15f80e612a09f6643300071324b
    label: disclosure@vulncheck.com
  - url: 'https://github.com/getgrav/grav/security/advisories/GHSA-m86m-jjcg-gcvv'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/grav-api-plugin-privilege-escalation-via-invitations-groups
    label: disclosure@vulncheck.com
  - url: 'https://github.com/getgrav/grav/security/advisories/GHSA-m86m-jjcg-gcvv'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
epss: 0.00523
epssPercentile: 0.43404
ingestedAt: '2026-08-29T00:27:54.083Z'
---

## Overview

Grav API Plugin versions before 1.0.10 fail to validate the groups field in InvitationsController::create(), allowing authenticated api.users.write callers to assign invited accounts to groups that grant api.super permissions. Attackers can create invitation records with elevated group membership, and when accepted, the new account gains full super-admin API access without the inviter holding those permissions.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.