GetGrav Flex Objects Plugin up to 1.4.2 Admin API FlexApiController.php requireFlexPermission improper authorization

Summaryinfo

A vulnerability has been found in GetGrav Flex Objects Plugin up to 1.4.2 and classified as critical. The affected element is the function requireFlexPermission of the file classes/Api/FlexApiController.php of the component Admin API. The manipulation leads to improper authorization. This vulnerability is traded as CVE-2026-62670. It is possible to initiate the attack remotely. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in GetGrav Flex Objects Plugin up to 1.4.2 and classified as critical. This issue affects the function requireFlexPermission of the file classes/Api/FlexApiController.php of the component Admin API. The manipulation with an unknown input leads to a improper authorization vulnerability. Using CWE to declare the problem leads to CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Grav Flex Objects Plugin allows you to build custom collections of objects. Prior to 1.4.3, the Grav Flex Objects Admin Next API requireFlexPermission() method in classes/Api/FlexApiController.php returns without denying access when a directory blueprint omits config.admin.permissions. An authenticated account with only api.access can use the index, show, create, update, delete, export, and media handlers for a permission-less directory even though the core admin.flex-object. authorization fallback would deny the same actions. This issue is fixed in version 1.4.3.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-62670 since 07/14/2026. The exploitation is known to be easy. The attack may be initiated remotely. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1548.002 according to MITRE ATT&CK.

By approaching the search of inurl:classes/Api/FlexApiController.php it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 1.4.3 eliminates this vulnerability.

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Productinfo

Vendor

• GetGrav

Name

• Flex Objects Plugin

Version

• 1.4.0
• 1.4.1
• 1.4.2

CPE 2.3info

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CPE 2.2info

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