CVE-2024-27923 Remote Code Execution by uploading a phar file using frontmatter
Attackers can achieve remote code execution by uploading malicious phar files via the frontmatter feature due to insufficient validation.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2024-27923?
CVE-2024-27923 is a high-severity vulnerability in Getgrav Grav, published on 6 Mar 2024. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Grav is a content management system (CMS). Prior to version 1.7.43, users who may write a page may use the `frontmatter` feature due to insufficient permission validation and inadequate file name validation. This may lead to remote code execution. Version 1.7.43 fixes this issue.
Which versions are affected by CVE-2024-27923?
2 open source packages ship an affected version, including getgrav/grav. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
getgrav/grav Packagist | All versions | 1.7.43 |
getgrav/grav Packagist | All versions | 1.7.43 |
Products include Getgrav Grav.
How do I fix CVE-2024-27923?
Upgrade getgrav/grav to 1.7.43 or later.
Is CVE-2024-27923 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-27923 exists.
Other vulnerabilities in Getgrav Grav
- CVE-2023-34251 Grav Server Side Template Injection vulnerability
- CVE-2025-46199 Cross-site scripting in n/a
- CVE-2021-47812 GravCMS 1.10.7 - Arbitrary YAML Write/Update (Unauthenticated) (2)
- CVE-2025-66844 Grav may be vulnerable to SSRF attack via Twig Templates
- CVE-2022-2073 Code Injection in getgrav/grav
Sources
Also known as GHSA-f6g2-h7qv-3m5v.