CVE-2026-64850

Grav: Remote code execution via unrestricted callable in Blueprint::dynamicData()

HIGH
8.7
CVSS Score
Published: August 19, 2026 at 03:58 PM UTC
Updated: September 9, 2026 at 09:27 PM UTC
1 product affected across 1 vendorGrav

Using grav by getgrav?

Get instant alerts when new vulnerabilities affect grav - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
HIGH8.7
Exploit prediction
EPSS 0.5%
SSVC
PoC

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

60%
v < 2.0.7
Affected range stops below 2.0.7, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCPoCNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.7HIGHGitHub_M
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-94

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card