CVE-2025-66297 - CVE House
Back to Database
Status published High CVE-2025-66297

Grav vulnerable to Privilege Escalation and Authenticated Remote Code Execution via Twig Injection

Vulnerability Description

Grav is a file-based Web platform. Prior to 1.8.0-beta.27, a user with admin panel access and permissions to create or edit pages in Grav CMS can enable Twig processing in the page frontmatter. By injecting malicious Twig expressions, the user can escalate their privileges to admin or execute arbitrary system commands via the scheduler API. This results in both Privilege Escalation (PE) and Remote Code Execution (RCE) vulnerabilities. This vulnerability is fixed in 1.8.0-beta.27.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2025-66297

Credits & Attribution

No credits recorded in the NVD database.

References

More from getgrav

View All →
CVE-2025-66312
Grav Admin Plugin vulnerable to Cross-Site Scripting (XSS) Stored endpoint `/admin/accounts/groups/[group]` parameter `data[readableName]`
Medium 6.2
CVE-2025-66311
Grav vulnerable to Cross-Site Scripting (XSS) Stored endpoint `/admin/pages/[page]` in Multiples parameters
Medium 6.2
CVE-2025-66310
Grav vulnerable to Cross-Site Scripting (XSS) Stored endpoint `/admin/pages/[page]` parameter `data[header][template]` in Advanced Tab
Medium 6.2
CVE-2025-66309
Grav vulnerable to Cross-Site Scripting (XSS) Reflected endpoint /admin/pages/[page], parameter data[header][content][items], located in the "Blog Config" tab
Medium 6.2
CVE-2025-66308
Grav Admin Plugin vulnerable to Cross-Site Scripting (XSS) Stored endpoint `/admin/config/site` parameter `data[taxonomies]`
Medium 6.8

Affected Vendor

Affected Software

grav
Vulnerable Versions:
< 1.8.0-beta.27

Timeline

Official Publish: December 1st, 2025
Last Modified: December 2nd, 2025
Added to House: July 22nd, 2026

CVSS Vectors

Weaknesses (CWE)

CWE-1336

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.