EUVD-2026-42267

Grav: Stored CSS injection via Markdown image resize bypasses prior media style sanitizers in Grav...

Grav: XSS Blueprint Validation Bypass via Twig String Concatenation

Summary The XSS blueprint validator Security::detectXss runs on the raw page content before Twig processing. An attacker can use Twig's string concatenation operator to dynamically construct an event handler name at render time. The validator sees "on" "error" - a harmless Twig expression - and...

EUVD-2026-44650

Grav: XSS Blueprint Validation Bypass via Twig String Concatenation...

GHSA-2C4F-86XC-CR74 Grav: XSS Blueprint Validation Bypass via Twig String Concatenation

Summary The XSS blueprint validator Security::detectXss runs on the raw page content before Twig processing. An attacker can use Twig's string concatenation operator to dynamically construct an event handler name at render time. The validator sees "on" "error" - a harmless Twig expression - and...

GHSA-2VCX-H8P2-9PG9 Grav CMS — Improper Handling of Highly Compressed Data in Installer::unZip()

Summary An authenticated admin.super user can crash Grav or fill the disk by uploading a specially crafted ZIP archive through the Direct Install tool. The method Installer::unZip calls ZipArchive::extractTo without any limit on uncompressed size, entry count, or directory depth, enabling Zip Bom...

EUVD-2026-42951

Grav CMS — Improper Handling of Highly Compressed Data in Installer::unZip...

Grav CMS — Improper Handling of Highly Compressed Data in Installer::unZip()

Summary An authenticated admin.super user can crash Grav or fill the disk by uploading a specially crafted ZIP archive through the Direct Install tool. The method Installer::unZip calls ZipArchive::extractTo without any limit on uncompressed size, entry count, or directory depth, enabling Zip Bom...

CVE-2025-64059

Grav 1.7.50.2 allows admins to enter JavaScript via the Home Page editor. NOTE: the relevance of this for stored XSS is disputed because admins are allowed to modify templates, install plugins, and upload other executable content...

EUVD-2025-210894

Grav 1.7.50.2 allows admins to enter JavaScript via the Home Page editor. NOTE: the relevance of this for stored XSS is disputed because admins are allowed to modify templates, install plugins, and upload other executable content...

CVE-2025-64059

Grav 1.7.50.2 allows admins to enter JavaScript via the Home Page editor. NOTE: the relevance of this for stored XSS is disputed because admins are allowed to modify templates, install plugins, and upload other executable content...

CVE-2025-64059

Grav 1.7.50.2 allows administrators to inject JavaScript through the Home Page editor , a potential stored XSS vector. However, the practical relevance is disputed : since admins already possess the ability to modify templates, install plugins, and upload other executable content, the additional ...

CVE-2025-64059

Grav 1.7.50.2 allows admins to enter JavaScript via the Home Page editor. NOTE: the relevance of this for stored XSS is disputed because admins are allowed to modify templates, install plugins, and upload other executable content...

CVE-2025-64059: Improper Neutralization of Input During Web Page Generation

Grav 1.7.50.2 allows admins to enter JavaScript via the Home Page editor. NOTE: the relevance of this for stored XSS is disputed because admins are allowed to modify templates, install plugins, and upload other executable content...

PT-2026-90946

Grav 1.7.50.2 allows admins to enter JavaScript via the Home Page editor. NOTE: the relevance of this for stored XSS is disputed because admins are allowed to modify templates, install plugins, and upload other executable content...

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 without proper output escaping. Page editors can inject arbitrary script by registering malicious assets or injecting attributes, which are...

CVE-2026-86193

grav-plugin-api before 1.0.20 fails to validate group-inherited super permissions in user-management guards, allowing non-super user managers to modify super-admin accounts. Attackers with api.access and api.users.write can patch password fields on group-super accounts to gain full administrative...

CVE-2026-86195

grav-plugin-api versions before 1.0.20 contain a privilege escalation vulnerability in the InvitationsController where the stripSuperFlags method only removes nested super flags but fails to strip dot-keyed equivalents like api.super. A non-super user manager with api.access and api.users.write...

CVE-2026-86194

Grav Form Plugin before 9.1.22 fails to verify page authorization when resolving forms by name across pages, allowing anonymous visitors to execute form actions defined on login-restricted or unpublished pages. Attackers can POST to any public page with a restricted form's name to trigger save,...

CVE-2026-86196

Grav API plugin versions before 1.0.20 build password reset links from the untrusted Host header in the forgot-password endpoint, allowing unauthenticated attackers to redirect reset tokens to attacker-controlled domains. Attackers can send password reset requests for any account with a malicious...

CVE-2026-86197 Grav before 2.0.20 Cross-Site Scripting via Assets Sandbox

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...