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CVE-2026-65608— Grav before 2.0.9 Remote Code Execution via FlexDirectory

Quick assessment

Affected
getgrav grav
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Grav Grav是Grav组织开源的一个基于文件系统的无数据库内容管理系统。 Grav 1.7.0版本至2.0.9之前版本存在代码注入漏洞，该漏洞源于FlexDirectory::dynamicDataField()在解析blueprint data-*@:指令时调用call_user_func_array()，仅验证目标可调用而未限制exec、system等危险函数，导致任何具有创建或更新权限的认证用户可在服务器上执行任意命令。

CVSS 8.8 · High EPSS 1.28% · P69

Affected Version Matrix 2

VendorProduct Version RangeStatus
getgrav grav 1.7.0< 2.0.9 affected
2.0.9 unaffected
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I. Basic Information for CVE-2026-65608

Vulnerability Information
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Vulnerability Title
Grav before 2.0.9 Remote Code Execution via FlexDirectory
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
使用外部可控制的输入来选择类或代码(不安全的反射)
Source: CVE Program / CVE List V5
Vulnerability Title
Grav 代码注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Grav Grav是Grav组织开源的一个基于文件系统的无数据库内容管理系统。 Grav 1.7.0版本至2.0.9之前版本存在代码注入漏洞，该漏洞源于FlexDirectory::dynamicDataField()在解析blueprint data-*@:指令时调用call_user_func_array()，仅验证目标可调用而未限制exec、system等危险函数，导致任何具有创建或更新权限的认证用户可在服务器上执行任意命令。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
getgrav grav 1.7.0 ~ 2.0.9 -

II. Public POCs for CVE-2026-65608

# POC Description Source Link Shenlong Link
AI-Generated POC Verified env Premium
Reproduced successfully in a real sandbox · Below is the actual recording of building the environment and exploiting the vulnerability.
Reproduction recording is a Pro+ exclusive
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claude_code · 9956 chars
GitHub 复现环境（可 clone 直接跑）
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
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POC zip download
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III. Intelligence Information for CVE-2026-65608

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Patches & Fixes for CVE-2026-65608 (1)

Vendor Advisories for CVE-2026-65608 (1)

News Coverage for CVE-2026-65608 (1)

Same Patch Batch · getgrav · 2026-07-23 · 4 CVEs total

CVE-2026-65897 8.8 HIGH Grav API Plugin 1.0.9 Privilege Escalation via Invitations groups
CVE-2026-65895 8.5 HIGH Grav API Plugin before 1.0.10 Broken Access Control
CVE-2026-65896 7.1 HIGH Grav API Plugin before 1.0.10 Path Traversal via move

IV. Related Vulnerabilities

Same product: grav
Same vendor: getgrav
Same weakness: CWE-470

V. Comments for CVE-2026-65608

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