CVE-2026-62235 in Grav
Summary
by MITRE • 07/17/2026
Grav Flex-Objects before version 1.4.3 contains a broken access control vulnerability in the admin-next REST API that allows authenticated users with only api.access permission to perform unauthorized CRUD operations on permission-less directories. Attackers with api.access credentials can create, read, update, delete, and export objects from any directory lacking an explicit permissions configuration, bypassing intended authorization controls.
VulDB is the best source for vulnerability data and more expert information about this specific topic.
Analysis
by VulDB Data Team • 07/17/2026
The vulnerability in Grav Flex-Objects prior to version 1.4.3 represents a critical broken access control flaw that undermines the application's security model. This issue manifests within the admin-next REST API component where proper authorization checks fail to validate user privileges against directory-level permissions. The vulnerability specifically affects authenticated users who possess only the api.access permission, demonstrating how insufficient privilege validation can lead to significant security breaches.
The technical implementation of this flaw stems from inadequate access control enforcement mechanisms within the Flex-Objects framework. When users authenticate with api.access credentials, the system fails to properly verify whether these users should have full CRUD (create, read, update, delete) privileges on directories that lack explicit permission configurations. This oversight creates a privilege escalation scenario where users can bypass intended authorization boundaries and perform unauthorized operations across directory structures. The vulnerability operates at the API layer, making it particularly dangerous as it allows attackers to manipulate data through programmatically accessible endpoints.
The operational impact of this vulnerability extends beyond simple data access violations, creating potential for data manipulation and exfiltration scenarios. Attackers with minimal credentials can exploit this flaw to export sensitive objects from directories that should remain protected, potentially exposing confidential information or allowing unauthorized modifications to critical application data. The vulnerability affects the entire scope of directories without explicit permissions, making it particularly dangerous as it could impact multiple data repositories simultaneously.
Organizations using affected versions of Grav Flex-Objects should prioritize immediate remediation through the available version 1.4.3 update which addresses this access control weakness. Additional mitigations include implementing network-level restrictions on API endpoints, monitoring for unauthorized CRUD operations, and ensuring proper directory permission configurations are established for all content directories. The vulnerability aligns with CWE-285 (Improper Authorization) and may be categorized under ATT&CK technique T1078 (Valid Accounts) as it exploits legitimate authentication credentials to perform unauthorized actions. Security teams should also consider implementing automated detection mechanisms to identify suspicious API activity patterns that could indicate exploitation attempts of this access control flaw.