medium5.1
CVE-2026-86197
Grav before 2.0.20 contains a cross-site scripting vulnerability in the Twig sandbox policy that allowlists addJs and addCss methods on Grav\Common\Assets with…
Impact
Grav before 2.0.20 contains a cross-site scripting vulnerability in the Twig sandbox policy that allowlists addJs and addCss methods on Grav\Common\Assets without proper output escaping. Page editors can inject arbitrary script by registering malicious assets or injecting attributes, which are rendered unescaped into document head tags and executed for all visitors including administrators.
Affected products
| Product | Affected versions |
|---|---|
| Grav | before 2.0.20 |
Versions were read from the advisory text. No structured product data has been published for this record yet.