CVE-2026-62669: Improper Authentication

Grav Login Plugin adds login, basic ACL, and session wide messages to Grav. Prior to 3.8.11, the Grav Login plugin login.regenerate2FASecret task checks only that the pending-session user exists rather than requiring $user-authorized. After submitting a victim's correct password, an attacker can...

CVE-2026-64852: Missing Authorization

Grav API Plugin is a RESTful API for Grav CMS that provides full headless access to your site's content. Prior to 1.0.8, the Grav API plugin intercepts the apiKeyGenerate and apiKeyRevoke admin tasks in user/plugins/api/api.php and authorizes the caller with only admin.login. A basic panel user c...

CVE-2026-62666: Authorization Bypass Through User-Controlled Key

Grav API Plugin is a RESTful API for Grav CMS that provides full headless access to your site's content. Prior to 1.0.6, Grav API plugin UsersController::createApiKey, generate2fa, and disable2fa omit the accessGrantsSuper target check used by sibling user mutation endpoints. A non-super account...

CVE-2026-62670: Missing Authorization

Grav Flex Objects Plugin allows you to build custom collections of objects. Prior to 1.4.3, the Grav Flex Objects Admin Next API requireFlexPermission method in classes/Api/FlexApiController.php returns without denying access when a directory blueprint omits config.admin.permissions. An...

CVE-2026-63407: Permissive Cross-domain Policy with Untrusted Domains

Grav API Plugin is a RESTful API for Grav CMS that provides full headless access to your site's content. Prior to 1.0.0-rc.16, the Grav API plugin CorsMiddleware returns Access-Control-Allow-Origin: and permissive OPTIONS responses for authenticated /api/v1 endpoints. JavaScript from any origin c...

PT-2026-78482

Name of the Vulnerable Software and Affected Versions Grav API Plugin versions prior to 1.0.2 Description The plugin fails to invoke the Security::sanitizeSVG function within the HandlesMediaUploads::processUploadedFile function when processing the 'POST /api/v1/media' endpoint. While the SVG...

PT-2026-78483

Name of the Vulnerable Software and Affected Versions Grav versions prior to 2.0.1 Description The ZipArchiver::extract function in system/src/Grav/Common/Filesystem/ZipArchiver.php fails to enforce limits on uncompressed size, file count, or nesting depth when passing archives to...

PT-2026-78515

Grav API Plugin is a RESTful API for Grav CMS that provides full headless access to your site's content. Prior to 1.0.0-rc.16, the Grav API plugin CorsMiddleware returns Access-Control-Allow-Origin: and permissive OPTIONS responses for authenticated /api/v1 endpoints. JavaScript from any origin c...

PT-2026-78517

Name of the Vulnerable Software and Affected Versions Grav versions prior to 2.0.7 Description In the Blueprint::dynamicData function located in system/src/Grav/Common/Data/Blueprint.php, the software passes an editor-controlled Class::method provider and arguments to call user func array without...

PT-2026-78485

Grav API Plugin is a RESTful API for Grav CMS that provides full headless access to your site's content. Prior to 1.0.6, the Grav API plugin ApiKeyManager::generateKey stores a declared scopes array, but ApiKeyAuthenticator::authenticate does not read keyDatascopes and returns the owning user's...

PT-2026-78519

Grav API Plugin is a RESTful API for Grav CMS that provides full headless access to your site's content. Prior to 1.0.8, the Grav API plugin intercepts the apiKeyGenerate and apiKeyRevoke admin tasks in user/plugins/api/api.php and authorizes the caller with only admin.login. A basic panel user c...

CVE-2026-53654: URL Redirection to Untrusted Site

Grav is a file-based Web platform. Prior to 3.8.5, the Login plugin twofacancel task accepts a client-controlled redirect field without a nonce and allows an unauthenticated request to set an external http, https, or protocol-relative Location target. Controller::execute applies the field when...

CVE-2026-61842: Exposure of Sensitive Information to an Unauthorized Actor

Grav is a file-based Web platform. Prior to 2.0.2, the Grav Twig content sandbox permits grav.offsetGet'config' to return the raw configuration object and permits jsonencode, printr, yamlencode, and string filters to serialize that object without passing through...

CVE-2026-61690: Improper Handling of Highly Compressed Data (Data Amplification)

Grav is a file-based Web platform. Prior to 2.0.1, Grav ZipArchiver::extract in system/src/Grav/Common/Filesystem/ZipArchiver.php passes archives to ZipArchive::extractTo without enforcing the system.gpm.archive uncompressed-size, file-count, or nesting-depth limits. Code using...

PT-2026-78487

Name of the Vulnerable Software and Affected Versions Grav Login Plugin versions prior to 3.8.11 Description The login.regenerate2FASecret task fails to verify if a user is authorized, checking only for the existence of a pending-session user. An attacker who has obtained a victim's password can...

PT-2026-78514

Name of the Vulnerable Software and Affected Versions Grav versions prior to 2.0.4 Description Security rules in .htaccess and webserver-configs/htaccess.txt omit the Apache NC No Case flag, causing sensitive directory and file-extension patterns to be compared case-sensitively. On case-insensiti...

PT-2026-78488

Name of the Vulnerable Software and Affected Versions Grav versions prior to 2.0.4 Description Grav allows the regex replace filter and function in system/config/security.yaml. The GravExtension::regexReplace function passes a pattern controlled by the editor directly to preg replace. When...

CVE-2026-62671: Cross-Site Request Forgery (CSRF)

Grav Login Plugin adds login, basic ACL, and session wide messages to Grav. Prior to 3.8.11, the Grav Login plugin login.regenerate2FASecret task accepts a top-level GET request through the TaskServiceProvider task: URI parameter without requiring a login-form nonce, an Origin check, or a Referer...

CVE-2026-62672: Inefficient Regular Expression Complexity

Grav is a file-based Web platform. Prior to 2.0.4, Grav allowlists the regexreplace filter and function in system/config/security.yaml, and GravExtension::regexReplace passes an editor-controlled pattern directly to pregreplace. When security.twigcontent.processenabled is enabled, an authenticate...

PT-2026-78486

Grav API Plugin is a RESTful API for Grav CMS that provides full headless access to your site's content. Prior to 1.0.6, the Grav API plugin WebhookController.php accepts webhook URLs after only FILTER VALIDATE URL syntax validation, and WebhookDispatcher.php initializes cURL without CURLOPT...