CVE-2026-65897 Details
Description
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.
A privilege escalation vulnerability has been identified in the Grav API Plugin, affecting versions prior to 1.0.10. The issue arises in the InvitationsController::create() method, where the groups field is not properly validated. This flaw allows authenticated users with 'api.users.write' permissions to assign invited accounts to groups that provide 'api.super' privileges. As a result, attackers can create invitations that, once accepted, grant the new account full super-admin API access, bypassing the need for the inviter to hold such permissions.
Users are advised to update the Grav API Plugin to version 1.0.10 or later, where this vulnerability has been addressed.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Jul 23, 2026CISA-ADP
Assessed Jul 23, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/getgrav/grav/security/advisories/GHSA-m86m-jjcg-gcvv | CISA-ADP | AdvisoryExploitRemedyTechnical AnalysisVendor |
| https://github.com/getgrav/grav/commit/345e79e3abf8c15f80e612a09f6643300071324b | [email protected] | Broken LinkSource CodeVendor |
| https://github.com/getgrav/grav-plugin-api/commit/f9438d4e71389b1041ac60b69b0b5714ecfa3bdd | [email protected] | |
| https://github.com/getgrav/grav/security/advisories/GHSA-m86m-jjcg-gcvv | [email protected] | AdvisoryExploitRemedyTechnical AnalysisVendor |
| https://www.vulncheck.com/advisories/grav-api-plugin-privilege-escalation-via-invitations-groups | [email protected] | AdvisoryBundleVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-269 | Improper Privilege Management | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Grav API Plugin | <= 1.0.9 (semver) |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Aug 28, 2026 | CVE Modified | [email protected] |
| Aug 28, 2026 | CVE Modified | CISA-ADP |
| Jul 23, 2026 | CVE Modified | CISA-ADP |
| Jul 23, 2026 | New CVE Received | [email protected] |