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high advisory

Grav CMS Twig Sandbox Vulnerability Allows Plugin Secret Exfiltration

A vulnerability in the Grav CMS Twig sandbox allow-list allows any user with the `admin.pages` role to call `config.toArray()` from within a page body, dumping the entire merged site configuration, including all plugin secrets, into the rendered HTML.

Grav twig rce secret-exfiltration
2r
high threat

Grav CMS Stored XSS Vulnerability Leading to Potential RCE

A stored XSS vulnerability exists in Grav Core + Admin Plugin versions before 2.0.0-beta.2, where a low-privileged user can inject malicious code via a crafted tag, potentially leading to the exfiltration of admin session context, bypassing CSRF protections, and escalating to remote code execution (RCE).

Grav Core + Admin Plugin grav xss rce webserver
2r 2t
high advisory

Grav File Cache Insecure Deserialization Vulnerability

Grav versions 1.7.44 through 1.7.49.5 are vulnerable to insecure deserialization in the File Cache component, where the `unserialize` function with `allowed_classes => true` can lead to arbitrary code execution if an attacker tampers with cache files.

grav insecure-deserialization code-execution web-application
2r 2t
critical advisory

Grav Form Plugin Anonymous Page Content Overwrite Vulnerability

Grav Form plugin versions before 9.1.0 allow unauthenticated users to overwrite page content by uploading a malicious markdown file, leading to potential privilege escalation by crafting a new super-admin user.

grav-plugin-form grav cms file-upload privilege-escalation content-overwrite
2r 2t
critical advisory

Grav Login Plugin Privilege Escalation Vulnerability

Unauthenticated users can escalate privileges to admin in Grav CMS by manipulating registration data due to missing server-side validation in the Login plugin.

Login Plugin +2 grav privilege-escalation web
2r 1t 1i