Junglewise Threat Intelligence

CVE-2025-66294: Grav is a file-based Web platform. Prior to 1.8.0-beta.27, a Server-Side Template Injection (SSTI) vulnerability exists in Grav that allows

CVE-2025-66294 · Severity: high · CVSS 8.8 · Published 2025-12-01

Technologies: getgrav/grav (Packagist). Vendors: Packagist.

Executive brief

Grav is a file-based Web platform. Prior to 1.8.0-beta.27, a Server-Side Template Injection (SSTI) vulnerability exists in Grav that allows authenticated attackers with editor permissions to execute arbitrary commands on the server and, under certain conditions, may also be exploited by unauthenticated attackers. This vulnerability stems from weak regex validation in the cleanDangerousTwig method. This vulnerability is fixed in 1.8.0-beta.27.

Affected products

  • Packagist getgrav/grav

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