Arbitrary Code Injection 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 Arbitrary Code Injection vulnerabilities in an interactive lesson.
Start learning- Snyk IDSNYK-PHP-GETGRAVGRAV-14157167
- published2 Dec 2025
- disclosed1 Dec 2025
- creditTarek Nakkouch
Introduced: 1 Dec 2025
NewCVE-2025-66294 (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 Arbitrary Code Injection via insufficient validation in the cleanDangerousTwig function. An attacker can execute arbitrary commands on the server by injecting malicious templates. This may be exploited by authenticated users with editor permissions, and under certain conditions, by unauthenticated attackers.