What’s Vulnerable › Vulnerabilities

CVE-2026-64850: Grav: Remote code execution via unrestricted callable in Blueprint::dynamicData()

• Severity: high (CVSS 8.7 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-19 · updated 2026-09-09
• Weakness: CWE-94

Description

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 products

• getgrav grav: before 2.0.7

References

• https://github.com/getgrav/grav/commit/acffa34cbb0787fee87c609e0d6289e904fee33c
• https://github.com/getgrav/grav/releases/tag/2.0.7
• https://github.com/getgrav/grav/security/advisories/GHSA-fj2p-qj2f-74v5
• https://github.com/getgrav/grav/security/advisories/GHSA-fj2p-qj2f-74v5

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