Authorization Bypass Through User-Controlled Key Affecting getgrav/grav package, versions <1.8.0-beta.27
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applicationsSnyk Learn
Learn about Authorization Bypass Through User-Controlled Key vulnerabilities in an interactive lesson.
Start learning- Snyk IDSNYK-PHP-GETGRAVGRAV-14157158
- published2 Dec 2025
- disclosed1 Dec 2025
- creditElvinNuruyev
Introduced: 1 Dec 2025
NewCVE-2025-66306 (opens in a new tab)How to fix?
Upgrade getgrav/grav to version 1.8.0-beta.27 or higher.
Overview
getgrav/grav is a Modern, Crazy Fast, Ridiculously Easy and Amazingly Powerful Flat-File CMS.
Affected versions of this package are vulnerable to Authorization Bypass Through User-Controlled Key via the /admin/accounts/users/{username} endpoint. An attacker can obtain sensitive information belonging to other users by accessing unauthorized resources with insufficient access controls.
PoC
Log in with a non-privileged account, also known as a zero-privilege account.
Access another user’s endpoint, for example:
GET /admin/accounts/users/adminObserve the HTTP 403 Forbidden response.
Inspecting the page source reveals sensitive data, such as the admin email address, displayed within the
<title>tag.