Grav: FlexDirectory::dynamicDataField() executes arbitrary callables from blueprint data with no validation

Summary A missing validation check in Grav's Flex framework lets an account holding nothing but an ordinary object-create permission on a single Flex directory execute arbitrary shell commands on the server. Any authenticated user with create or update rights on a Flex-based directory Flex Users,...

GHSA-C4WF-2XXC-68QM Grav: FlexDirectory::dynamicDataField() executes arbitrary callables from blueprint data with no validation

Summary A missing validation check in Grav's Flex framework lets an account holding nothing but an ordinary object-create permission on a single Flex directory execute arbitrary shell commands on the server. Any authenticated user with create or update rights on a Flex-based directory Flex Users,...

Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')

Overview getgrav/grav is a Modern, Crazy Fast, Ridiculously Easy and Amazingly Powerful Flat-File CMS. Affected versions of this package are vulnerable to Use of Externally-Controlled Input to Select Classes or Code 'Unsafe Reflection' via the dynamicDataField function in the FlexDirectory...

GHSA-PP9R-PPC4-25W4 Duplicate Advisory: Grav: FlexDirectory::dynamicDataField() executes arbitrary callables from blueprint data with no validation

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-c4wf-2xxc-68qm. This link is maintained to preserve external references. Original Description Grav versions = 1.7.0 and before 2.0.9 contain a remote code execution vulnerability. FlexDirectory::dynamicDataField...

Duplicate Advisory: Grav: FlexDirectory::dynamicDataField() executes arbitrary callables from blueprint data with no validation

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-c4wf-2xxc-68qm. This link is maintained to preserve external references. Original Description Grav versions = 1.7.0 and before 2.0.9 contain a remote code execution vulnerability. FlexDirectory::dynamicDataField...

CVE-2026-65608: Use of Externally-Controlled Input to Select Classes or Code

Grav versions = 1.7.0 and before 2.0.9 contain a remote code execution vulnerability. FlexDirectory::dynamicDataField resolves blueprint data-@: directives by calling calluserfuncarray on attacker-influenced input, validating only that the target is callable iscallable without restricting dangero...

PT-2026-63974

Name of the Vulnerable Software and Affected Versions Grav versions 1.7.0 through 2.0.8 Description Authenticated users with create or update permissions on Flex-based directories, such as Flex Users, Flex Pages, Flex Objects, or custom Flex types, can execute arbitrary shell commands on the...