CVE-2026-42608 Grav: Unauthenticated Path Traversal & Arbitrary File Write in FormFlash component.

Grav is a file-based Web platform. Prior to 2.0.0-beta.2, there is a Path Traversal vulnerability within the FormFlash core component. By manipulating the sessionid passed as form-flash-id in POST requests, an unauthenticated attacker can traverse the filesystem to create arbitrary directories an...

CVE-2026-42608

Grav CVE-2026-42608 describes an unauthenticated path traversal in the FormFlash component that lets an attacker manipulate the session_id (__form-flash-id) in POST requests to traverse the filesystem and write an index.yaml, enabling arbitrary directory creation and data manipulation. Affected: ...

Grav 路径遍历漏洞

Grav is a scalable content management system CMS developed by the Grav open-source community, suitable for use in personal blogs, small content publishing platforms, and single-page product displays. Versions of Grav prior to 2.0.0-beta.2 contained a path traversal vulnerability. This vulnerabili...