CVE-2025-66299
Description
Grav is a file-based Web platform. Prior to 1.8.0-beta.27, Grav CMS is vulnerable to a Server-Side Template Injection (SSTI) that allows any authenticated user with editor permissions to execute arbitrary code on the remote server, bypassing the existing security sandbox. Since the security sandbox does not fully protect the Twig object, it is possible to interact with it (e.g., call methods, read/write attributes) through maliciously crafted Twig template directives injected into a web page. This allows an authenticated editor to add arbitrary functions to the Twig attribute system.twig.safe_filters, effectively bypassing the Grav CMS sandbox. This vulnerability is fixed in 1.8.0-beta.27.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
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
29cpe:2.3:a:getgrav:grav:*:*:*:*:*:*:*:*+ 27 more
- cpe:2.3:a:getgrav:grav:*:*:*:*:*:*:*:*range: <1.8.0
- cpe:2.3:a:getgrav:grav:1.8.0:beta10:*:*:*:*:*:*
- cpe:2.3:a:getgrav:grav:1.8.0:beta11:*:*:*:*:*:*
- cpe:2.3:a:getgrav:grav:1.8.0:beta12:*:*:*:*:*:*
- cpe:2.3:a:getgrav:grav:1.8.0:beta13:*:*:*:*:*:*
- cpe:2.3:a:getgrav:grav:1.8.0:beta14:*:*:*:*:*:*
- cpe:2.3:a:getgrav:grav:1.8.0:beta15:*:*:*:*:*:*
- cpe:2.3:a:getgrav:grav:1.8.0:beta16:*:*:*:*:*:*
- cpe:2.3:a:getgrav:grav:1.8.0:beta17:*:*:*:*:*:*
- cpe:2.3:a:getgrav:grav:1.8.0:beta18:*:*:*:*:*:*
- cpe:2.3:a:getgrav:grav:1.8.0:beta19:*:*:*:*:*:*
- cpe:2.3:a:getgrav:grav:1.8.0:beta1:*:*:*:*:*:*
- cpe:2.3:a:getgrav:grav:1.8.0:beta20:*:*:*:*:*:*
- cpe:2.3:a:getgrav:grav:1.8.0:beta21:*:*:*:*:*:*
- cpe:2.3:a:getgrav:grav:1.8.0:beta22:*:*:*:*:*:*
- cpe:2.3:a:getgrav:grav:1.8.0:beta23:*:*:*:*:*:*
- cpe:2.3:a:getgrav:grav:1.8.0:beta24:*:*:*:*:*:*
- cpe:2.3:a:getgrav:grav:1.8.0:beta25:*:*:*:*:*:*
- cpe:2.3:a:getgrav:grav:1.8.0:beta26:*:*:*:*:*:*
- cpe:2.3:a:getgrav:grav:1.8.0:beta2:*:*:*:*:*:*
- cpe:2.3:a:getgrav:grav:1.8.0:beta3:*:*:*:*:*:*
- cpe:2.3:a:getgrav:grav:1.8.0:beta4:*:*:*:*:*:*
- cpe:2.3:a:getgrav:grav:1.8.0:beta5:*:*:*:*:*:*
- cpe:2.3:a:getgrav:grav:1.8.0:beta6:*:*:*:*:*:*
- cpe:2.3:a:getgrav:grav:1.8.0:beta7:*:*:*:*:*:*
- cpe:2.3:a:getgrav:grav:1.8.0:beta8:*:*:*:*:*:*
- cpe:2.3:a:getgrav:grav:1.8.0:beta9:*:*:*:*:*:*
- (no CPE)range: < 1.8.0-beta.27
Patches
Vulnerability mechanics
References
4- github.com/getgrav/grav/commit/e37259527d9c1deb6200f8967197a9fa587c6458nvdPatchWEB
- github.com/getgrav/grav/security/advisories/GHSA-gjc5-8cfh-653xnvdExploitThird Party AdvisoryWEB
- github.com/advisories/GHSA-gjc5-8cfh-653xghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2025-66299ghsaADVISORY
News mentions
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