High severityNVD Advisory· Published Dec 1, 2025· Updated Dec 2, 2025
Grav vulnerable to Privilege Escalation and Authenticated Remote Code Execution via Twig Injection
CVE-2025-66297
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.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
getgrav/gravPackagist | < 1.8.0-beta.27 | 1.8.0-beta.27 |
Affected products
2Patches
Vulnerability mechanics
References
4- github.com/advisories/GHSA-858q-77wx-hhx6ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2025-66297ghsaADVISORY
- github.com/getgrav/grav/commit/e37259527d9c1deb6200f8967197a9fa587c6458ghsax_refsource_MISCWEB
- github.com/getgrav/grav/security/advisories/GHSA-858q-77wx-hhx6ghsax_refsource_CONFIRMWEB
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