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.
Metrics
Affected Vendors & Products
| Vendors | Products |
|---|---|
| Getgrav |
|
Configuration 1 [-]
|
No data.
References
History
Wed, 03 Dec 2025 15:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| CPEs | cpe:2.3:a:getgrav:grav:*:*:*:*:*:*:*:* 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:*:*:*:*:*:* |
Tue, 02 Dec 2025 14:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Tue, 02 Dec 2025 12:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Getgrav
Getgrav grav |
|
| Vendors & Products |
Getgrav
Getgrav grav |
Mon, 01 Dec 2025 21:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | Security Sandbox Bypass with SSTI (Server Side Template Injection) in the Grav CMS | |
| Weaknesses | CWE-1336 CWE-94 |
|
| References |
| |
| Metrics |
cvssV3_1
|
MITRE
Status: PUBLISHED
Assigner: GitHub_M
Published: 2025-12-01T21:15:11.704Z
Updated: 2025-12-02T14:07:58.544Z
Reserved: 2025-11-26T23:11:46.393Z
Link: CVE-2025-66299
Vulnrichment
Updated: 2025-12-02T14:07:53.172Z
NVD
Status : Analyzed
Published: 2025-12-01T22:15:49.290
Modified: 2025-12-03T15:41:59.710
Link: CVE-2025-66299
Redhat
No data.