GetGrav up to 1.0.12 API Plugin guardTwigContent special elements used in a template engine

Summaryinfo

A vulnerability classified as problematic has been found in GetGrav Grav up to 1.0.12. This vulnerability affects the function PagesController::guardTwigContent of the component API Plugin. Performing a manipulation results in improper neutralization of special elements used in a template engine. This vulnerability is reported as CVE-2026-72824. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability classified as problematic has been found in GetGrav Grav up to 1.0.12. This affects the function PagesController::guardTwigContent of the component API Plugin. The manipulation with an unknown input leads to a improper neutralization of special elements used in a template engine vulnerability. CWE is classifying the issue as CWE-1336. The product uses a template engine to insert or process externally-influenced input, but it does not neutralize or incorrectly neutralizes special elements or syntax that can be interpreted as template expressions or other code directives when processed by the engine. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

The Grav API plugin (getgrav/grav-plugin-api) before 1.0.13 contains an API key scope-cap bypass in PagesController::guardTwigContent(). The Twig-toggle check uses a bare isSuperAdmin() gate that does not consult api_key_scopes, so a least-privilege API key scoped only to api.pages.write and minted on a super account can enable process.twig on a page save even though admin.pages_twig is intentionally outside the api.pages scope. When security.twig_content.process_enabled=true and editor_enabled=false, this allows Twig-in-content to execute server-side, resulting in server-side template injection (SSTI) and remote code execution.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-72824 since 08/10/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Additional levels of successful authentication are required for exploitation. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1221 for this issue.

Upgrading to version 1.0.13 eliminates this vulnerability.

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Productinfo

Vendor

• GetGrav

Name

• Grav

Version

• 1.0.0
• 1.0.1
• 1.0.2
• 1.0.3
• 1.0.4
• 1.0.5
• 1.0.6
• 1.0.7
• 1.0.8
• 1.0.9
• 1.0.10
• 1.0.11
• 1.0.12

Website

• Product: https://github.com/getgrav/grav/

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