CVE-2026-75837— Grav before 2.0.14 Privilege Escalation via Group Access Field
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是Grav组织开源的一款基于文件的扁平化内容管理系统。 Grav 2.0.14之前版本存在权限许可和访问控制问题漏洞，该漏洞源于核心组blueprint中的access字段缺少security@: admin.super限制，可能导致被委托的admin.users操作员保存设置access[admin][super]=true的组，从而提升为超级管理员并获取调度器和Twig评估能力。
Possible ATT&CK Techniques 1 AI
T1078.004 · Cloud Accounts
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I. Basic Information for CVE-2026-75837
Vulnerability Information
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Vulnerability Title
Grav before 2.0.14 Privilege Escalation via Group Access Field
Source: CVE Program / CVE List V5
Vulnerability Description
Grav before 2.0.14 fails to guard the access field in the core group blueprint with the required security@: admin.super restriction. A delegated admin.users operator can save a group with access[admin][super]=true to escalate to super-admin, gaining scheduler and Twig evaluation capabilities.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
特权管理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Grav 权限许可和访问控制问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Grav是Grav组织开源的一款基于文件的扁平化内容管理系统。 Grav 2.0.14之前版本存在权限许可和访问控制问题漏洞，该漏洞源于核心组blueprint中的access字段缺少security@: admin.super限制，可能导致被委托的admin.users操作员保存设置access[admin][super]=true的组，从而提升为超级管理员并获取调度器和Twig评估能力。
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
II. Public POCs for CVE-2026-75837
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
Verified env
Premium
Qwen3.6-35B-A3B
· 9479 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
100+ AI POC generations per month
III. Intelligence Information for CVE-2026-75837
请登录查看更多情报信息。
Vendor Advisories for CVE-2026-75837 (2)
Same Patch Batch · getgrav · 2026-08-18 · 14 CVEs total
| CVE-2026-75836 | 8.8 HIGH | Grav API Plugin before 1.0.14 Missing Authorization |
| CVE-2026-75827 | 8.8 HIGH | Grav before 2.0.15 Arbitrary File Write via error_log |
| CVE-2026-75828 | 8.7 HIGH | Grav before 2.0.15 Stored XSS via detectXss() Quote Bypass |
| CVE-2026-75829 | 8.1 HIGH | grav-plugin-api before 1.0.15 Twig SSTI via translate endpoint |
| CVE-2026-75831 | 7.6 HIGH | Grav before 2.0.15 Stored XSS via audio/video source URL |
| CVE-2026-75830 | 7.1 HIGH | grav-plugin-api before 1.0.15 Path Traversal via batchCopy |
| CVE-2026-74907 | 5.9 MEDIUM | Grav before 2.0.15 Path Traversal via plugin-asset-map.php |
| CVE-2026-75107 | 5.4 MEDIUM | Grav Form Plugin before 9.1.19 Stored XSS via Field Properties |
| CVE-2026-75834 | 5.4 MEDIUM | Grav before 2.0.14 Stored XSS via Invalid UTF-8 Byte |
| CVE-2026-74908 | 4.6 MEDIUM | Grav plugin-api before 1.0.15 Script Injection via SVG |
| CVE-2026-75832 | 4.3 MEDIUM | Grav API Plugin before 1.0.14 Authorization Bypass |
| CVE-2026-75835 | 4.3 MEDIUM | Grav API Plugin before 1.0.14 Missing Authorization |
| CVE-2026-75833 | 4.2 MEDIUM | Grav API Plugin Open Redirect via Backslash Bypass |
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V. Comments for CVE-2026-75837
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