CVE-2023-34251

Public Exploit
Grav Server Side Template Injection vulnerability

Description

Grav is a flat-file content management system. Versions prior to 1.7.42 are 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.

Category

9.9
CVSS
Severity: Critical
CVSS 3.1 •
EPSS 2.24% Top 20%
Vendor Advisory github.com Vendor Advisory github.com
Affected: getgrav grav
Published at:
Updated at:

References

Link Tags
https://github.com/getgrav/grav/security/advisories/GHSA-f9jf-4cp4-4fq5 vendor advisory exploit
https://github.com/getgrav/grav/commit/9d01140a63c77075ef09b26ef57cf186138151a5 patch
https://github.com/getgrav/grav/blob/develop/system/src/Grav/Common/Twig/Extension/GravExtension.php#L174 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2023-34251?
CVE-2023-34251 has been scored as a critical severity vulnerability.
How to fix CVE-2023-34251?
To fix CVE-2023-34251, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-34251 being actively exploited in the wild?
It is possible that CVE-2023-34251 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-34251?
CVE-2023-34251 affects getgrav grav.
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