CVE-2026-65608
Grav versions >= 1.7.0 and before 2.0.9 contain a remote code execution vulnerability. FlexDirectory::dynamicDataField() resolves blueprint data-*@: directives by calling call_user_func_array() on attacker-influenced input, validating only that the target is callable (is_callable()) without restricting dangerous functions such as exec, system, passthru, or shell_exec. Because FlexDirectory registers this handler for every Flex directory, it bypasses the validation added to Blueprint::dynamicData() in 2.0.7 (GHSA-fj2p-qj2f-74v5). Any authenticated user with create or update permission on any Flex-based directory (Flex Users, Flex Pages, Flex Objects, or custom Flex types) can execute arbitrary shell commands on the server.
- CVSS 4.0
- 8.7
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N - CVSS 3.1
- 8.8
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS
- 1.1% chance of exploitation in the next 30 days; higher than 65% of CVEs (scores of 2026-10-25)
- CWE
- CWE-470
- Published
- Modified
- Record from
- the NVD, synced
References
- https://github.com/getgrav/grav/commit/fae9e1bf2c40ce0b50d0dfce647aaa1d22f98969
- https://github.com/getgrav/grav/security/advisories/GHSA-c4wf-2xxc-68qm
- https://www.vulncheck.com/advisories/grav-before-remote-code-execution-via-flexdirectory
- https://github.com/getgrav/grav/security/advisories/GHSA-c4wf-2xxc-68qm