CVE-2023-34251

Grav Server Side Template Injection vulnerability

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.

Affected

getgrav · grav

CVSS v3.1 NVD

7.2 HIGHCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 GITHUB

9.9 CRITICALCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

CVSS v3.1 GitHub

9.1 CRITICALCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

EPSS

2.34% chance of exploitation in the next 30 days, 83rd percentile

Published

2023-06-14

Updated

2024-12-27

Proof-of-concept exploits (2)

• getgrav/grav/security/advisories/GHSA-f9jf-4cp4-4fq5
• advisories/GHSA-f9jf-4cp4-4fq5

Security advisories

• getgrav/grav/blob/develop/system/src/Grav/Common/Twig/Extension/GravExtension.php#L174

References

• CVE Record
• NVD entry