Package Instance

Code injection in grav
Grav is vulnerable to Server Side Template Injection via Twig. According to a previous vulnerability report, Twig should not render dangerous functions by default, such as system.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Cross-site Scripting (XSS) - Stored in Packagist getgrav/grav prior to 1.7.28.

Improper Control of Generation of Code ('Code Injection')
Grav is a file based Web-platform. Twig processing of static pages can be enabled in the front matter by any administrative user allowed to create or edit pages. As the Twig processor runs unsandboxed, this behavior can be used to gain arbitrary code execution and elevate privileges on the instance. The issue was addressed in version 1.7.11.

Cross-Site Request Forgery (CSRF)
The Scheduler in Grav CMS allows an attacker to execute a system command by tricking an admin into visiting a malicious website (CSRF).

Improper Control of Generation of Code ('Code Injection')
Grav is a flat-file content management system. Prior to version 1.7.42, the patch for CVE-2022-2073, a server-side template injection vulnerability in Grav leveraging the default `filter()` function, does not block other built-in functions exposed by Twig's Core Extension that could be used to invoke arbitrary unsafe functions, thereby allowing for remote code execution. A patch in version 1.74.2 overrides the built-in Twig `map()` and `reduce()` filter functions in `system/src/Grav/Common/Twig/Extension/GravExtension.php` to validate the argument passed to the filter in `$arrow`.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Cross-site Scripting (XSS) - Stored in GitHub repository getgrav/grav prior to 1.7.31.

Improper Control of Generation of Code ('Code Injection')
Grav is a flat-file content management system. Versions prior to 1.7.42 is vulnerable to server side template injection. Remote code execution is possible by embedding malicious PHP code on the administrator screen by a user with page editing privileges. Version 1.7.42 contains a fix for this issue.

Cross-site Scripting
Cross-site scripting (XSS) vulnerability in `system/src/Grav/Common/Twig/Twig.php` in Grav CMS allows remote attackers to inject arbitrary web script or HTML via the `PATH_INFO` to `admin/tools.`

Improper Control of Generation of Code ('Code Injection')
Grav is a file-based Web platform. Prior to version 1.7.42, the denylist introduced in commit 9d6a2d to prevent dangerous functions from being executed via injection of malicious templates was insufficient and could be easily subverted in multiple ways -- (1) using unsafe functions that are not banned, (2) using capitalised callable names, and (3) using fully-qualified names for referencing callables. Consequently, a low privileged attacker with login access to Grav Admin panel and page creation/update permissions is able to inject malicious templates to obtain remote code execution. A patch in version 1.7.42 improves the denylist.

URL Redirection to Untrusted Site ('Open Redirect')
Common/Grav.php in Grav before 1.7 has an Open Redirect. This is partially fixed in 1.6.23 and still present in 1.6.x.

Path Traversal
The Backup functionality in Grav CMS allows an authenticated attacker to read arbitrary local files on the underlying server by exploiting a path-traversal technique. (This vulnerability can also be exploited by an unauthenticated attacker due to a lack of CSRF protection.`

Path Traversal
The BackupDelete functionality in Grav CMS allows an authenticated attacker to delete arbitrary files on the underlying server by exploiting a path-traversal technique. (This vulnerability can also be exploited by an unauthenticated attacker due to a lack of CSRF protection.)