high8.7
CVE-2026-64850
Grav: Remote code execution via unrestricted callable in Blueprint::dynamicData()
Impact
Grav is a file-based Web platform. Prior to 2.0.7, Grav Blueprint::dynamicData() in system/src/Grav/Common/Data/Blueprint.php sends an editor-controlled Class::method provider and arguments to call_user_func_array() without rejecting dangerous callback parameters. An account with admin.pages or api.pages.write can use Grav\Common\Utils::arrayFilterRecursive() as a trampoline with system as the callback, place a command in page frontmatter, and execute that command as the web server user when the page is viewed. This issue is fixed in version 2.0.7.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| composer | getgrav/grav | < 2.0.7 | 2.0.7 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-fj2p-qj2f-74v5
- https://github.com/getgrav/grav/security/advisories/GHSA-fj2p-qj2f-74v5
- https://nvd.nist.gov/vuln/detail/CVE-2026-64850
- https://github.com/getgrav/grav/commit/acffa34cbb0787fee87c609e0d6289e904fee33c
- https://github.com/getgrav/grav/releases/tag/2.0.7