High severityNVD Advisory· Published Dec 1, 2025· Updated Dec 2, 2025
Grav is vulnerable to Server-Side Template Injection (SSTI) via Forms
CVE-2025-66298
Description
Grav is a file-based Web platform. Prior to 1.8.0-beta.27, having a simple form on site can reveal the whole Grav configuration details (including plugin configuration details) by using the correct POST payload to exploit a Server-Side Template (SST) vulnerability. Sensitive information may be contained in the configuration details. 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-8535-hvm8-2hmvghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2025-66298ghsaADVISORY
- github.com/getgrav/grav/commit/e37259527d9c1deb6200f8967197a9fa587c6458ghsax_refsource_MISCWEB
- github.com/getgrav/grav/security/advisories/GHSA-8535-hvm8-2hmvghsax_refsource_CONFIRMWEB
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