CVE-2025-66299 Security Sandbox Bypass with SSTI (Server Side Template Injection) in the Grav CMS

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...

CVE-2025-66299

Grav CMS is vulnerable to a Server-Side Template Injection (SSTI) that lets an authenticated editor execute arbitrary code on the server by abusing the Twig sandbox, bypassing restrictions via crafted Twig directives to modify system.twig.safe_filters. The issue exists prior to Grav 1.8.0-beta.27...

CVE-2025-66299 Security Sandbox Bypass with SSTI (Server Side Template Injection) in the Grav CMS

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...

CVE-2025-66299 Security Sandbox Bypass with SSTI (Server Side Template Injection) in the Grav CMS

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...

CVE-2025-66298 Grav is vulnerable to Server-Side Template Injection (SSTI) via Forms

Grav is a file-based Web platform. Prior to 1.8.0-beta.27, having a simple form on site can reveal the whole Grav configuration details including plugin configuration details by using the correct POST payload to exploit a Server-Side Template SST vulnerability. Sensitive information may be...

CVE-2025-66298 Grav is vulnerable to Server-Side Template Injection (SSTI) via Forms

Grav is a file-based Web platform. Prior to 1.8.0-beta.27, having a simple form on site can reveal the whole Grav configuration details including plugin configuration details by using the correct POST payload to exploit a Server-Side Template SST vulnerability. Sensitive information may be...

CVE-2025-66298

Grav is a file-based CMS affected by a server‑side template injection (SSTI) via forms. A crafted POST can disclose the entire Grav configuration, including plugin settings, exposing sensitive information. This vulnerability exists in Grav prior to 1.8.0-beta.27 and is fixed in 1.8.0-beta.27. Rem...

CVE-2025-66298 Grav is vulnerable to Server-Side Template Injection (SSTI) via Forms

Grav is a file-based Web platform. Prior to 1.8.0-beta.27, having a simple form on site can reveal the whole Grav configuration details including plugin configuration details by using the correct POST payload to exploit a Server-Side Template SST vulnerability. Sensitive information may be...

CVE-2025-66297

CVE-2025-66297 concerns Grav CMS prior to 1.8.0-beta.27. A user with admin-panel access and permissions to create/edit pages can enable Twig in page frontmatter, inject malicious Twig expressions, and escalate to admin or trigger arbitrary system commands via the scheduler API. Reported impacts i...

CVE-2025-66297 Grav vulnerable to Privilege Escalation and Authenticated Remote Code Execution via Twig Injection

Grav is a file-based Web platform. Prior to 1.8.0-beta.27, a user with admin panel access and permissions to create or edit pages in Grav CMS can enable Twig processing in the page frontmatter. By injecting malicious Twig expressions, the user can escalate their privileges to admin or execute...

CVE-2025-66297 Grav vulnerable to Privilege Escalation and Authenticated Remote Code Execution via Twig Injection

Grav is a file-based Web platform. Prior to 1.8.0-beta.27, a user with admin panel access and permissions to create or edit pages in Grav CMS can enable Twig processing in the page frontmatter. By injecting malicious Twig expressions, the user can escalate their privileges to admin or execute...

CVE-2025-66297 Grav vulnerable to Privilege Escalation and Authenticated Remote Code Execution via Twig Injection

Grav is a file-based Web platform. Prior to 1.8.0-beta.27, a user with admin panel access and permissions to create or edit pages in Grav CMS can enable Twig processing in the page frontmatter. By injecting malicious Twig expressions, the user can escalate their privileges to admin or execute...

CVE-2025-66296

CVE-2025-66296 affects Grav (file-based CMS). Before 1.8.0-beta.27, the Admin plugin has a flaw: no username uniqueness validation when creating users. An account with create user permissions can register a new user using an existing admin username, set a new password/email, and then log in as th...

CVE-2025-66296 Grav vulnerable to Privilege Escalation in Grav Admin: Missing Username Uniqueness Check Allows Admin Account Takeover

Grav is a file-based Web platform. Prior to 1.8.0-beta.27, a privilege escalation vulnerability exists in Grav’s Admin plugin due to the absence of username uniqueness validation when creating users. A user with the create user permission can create a new account using the same username as an...

CVE-2025-66296 Grav vulnerable to Privilege Escalation in Grav Admin: Missing Username Uniqueness Check Allows Admin Account Takeover

Grav is a file-based Web platform. Prior to 1.8.0-beta.27, a privilege escalation vulnerability exists in Grav’s Admin plugin due to the absence of username uniqueness validation when creating users. A user with the create user permission can create a new account using the same username as an...

CVE-2025-66296 Grav vulnerable to Privilege Escalation in Grav Admin: Missing Username Uniqueness Check Allows Admin Account Takeover

Grav is a file-based Web platform. Prior to 1.8.0-beta.27, a privilege escalation vulnerability exists in Grav’s Admin plugin due to the absence of username uniqueness validation when creating users. A user with the create user permission can create a new account using the same username as an...

CVE-2025-66294 Grav is vulnerable to RCE via SSTI through Twig Sandbox Bypass

Grav is a file-based Web platform. Prior to 1.8.0-beta.27, a Server-Side Template Injection SSTI vulnerability exists in Grav that allows authenticated attackers with editor permissions to execute arbitrary commands on the server and, under certain conditions, may also be exploited by...

CVE-2025-66294 Grav is vulnerable to RCE via SSTI through Twig Sandbox Bypass

Grav is a file-based Web platform. Prior to 1.8.0-beta.27, a Server-Side Template Injection SSTI vulnerability exists in Grav that allows authenticated attackers with editor permissions to execute arbitrary commands on the server and, under certain conditions, may also be exploited by...

CVE-2025-66294 Grav is vulnerable to RCE via SSTI through Twig Sandbox Bypass

Grav is a file-based Web platform. Prior to 1.8.0-beta.27, a Server-Side Template Injection SSTI vulnerability exists in Grav that allows authenticated attackers with editor permissions to execute arbitrary commands on the server and, under certain conditions, may also be exploited by...

CVE-2025-66295 Grav vulnerable to Path traversal / arbitrary YAML write via user creation leading to Account Takeover / System Corruption

Grav is a file-based Web platform. Prior to 1.8.0-beta.27, when a user with privilege of user creation creates a new user through the Admin UI and supplies a username containing path traversal sequences for example ..\Nijat or ../Nijat, Grav writes the account YAML file to an unintended path...