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TI-2026-46771 Aliases CVE-2026-65608GHSA-c4wf-2xxc-68qm

Grav before 2.0.9 Remote Code Execution via FlexDirectory

Priority HIGH 73CWE-470Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.01116 66th percentileScored 2026-11-07
Fix Fixed grav (getgrav): 2.0.9getgrav/grav (Packagist): 2.0.9

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
getgravgrav1.7.0 to before 2.0.92.0.9Patch availableCNA
—getgrav/grav (Packagist)1.7.0 to before 2.0.92.0.9Patch availableGHSA-c4wf-2xxc-68qm
  • grav Vendorgetgrav Affected 1.7.0 to before 2.0.9 Fixed in 2.0.9 Patch available CNA
  • getgrav/grav (Packagist) Vendor— Affected 1.7.0 to before 2.0.9 Fixed in 2.0.9 Patch available GHSA-c4wf-2xxc-68qm

Remediation

  • Fix · CNA grav (getgrav) Fixed in 2.0.9
  • Fix · GHSA-c4wf-2xxc-68qm getgrav/grav (Packagist) Fixed in 2.0.9 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-65608
  2. 2026-10-03 Alias added: GHSA-c4wf-2xxc-68qm

References

Patch 1

Advisory 2

Other 1

  • TI-2026-30893 Grav: Privilege Escalation via Missing Server-Side Validation of groups/access CVSS 3.1CRITICAL 9.4
  • TI-2025-28971 Cross Site Scripting vulnerability in grav v.1.7.48 and before allows an attacker to… CVSS 3.1CRITICAL 9.8
  • TI-2021-04523 Unauthenticated Arbitrary YAML Write/Update leads to Code Execution CVSS 3.1CRITICAL 9.8
  • TI-2026-50940 Grav CMS before 2.0.16 Origin Validation Bypass via Referer CVSS 4.0CRITICAL 9.3
  • TI-2026-46446 Grav before 2.0.7 Remote Code Execution via Blueprint dynamicData CVSS 4.0CRITICAL 9.3
  • TI-2021-22428 GravCMS 1.10.7 - Arbitrary YAML Write/Update (Unauthenticated) (2) CVSS 4.0CRITICAL 9.3
See all 228 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences