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CVE-2026-75836— Grav API Plugin before 1.0.14 Missing Authorization

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 1.0.14之前版本存在授权问题漏洞，该漏洞源于未正确执行MenubarController::executeAction()中的授权要求，可能导致具有api.access权限的已认证调用者绕过预期授权，直接调用特权菜单栏操作。

CVSS 8.8 · High EPSS 0.32% · P24

Affected Version Matrix 2

VendorProduct Version RangeStatus
getgrav grav < 1.0.14 affected
1.0.14 unaffected
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I. Basic Information for CVE-2026-75836

Vulnerability Information
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Vulnerability Title
Grav API Plugin before 1.0.14 Missing Authorization
Source: CVE Program / CVE List V5
Vulnerability Description
The Grav API plugin (getgrav/grav-plugin-api, bundled with Grav's admin-next/API stack) before 1.0.14 fails to enforce the authorize requirement in MenubarController::executeAction(). While the GET /menubar/items listing endpoint correctly filters menubar items via userPassesAuthorize(), the POST /api/v1/menubar/actions/{plugin}/{action} endpoint only checks the baseline api.access permission and never evaluates the authorize field a plugin registered for that action. Any authenticated caller with api.access can therefore invoke a privileged menubar action directly, bypassing the intended authorization. No plugin bundled with core Grav currently registers a privileged authorize handler, so on a stock install the impact is latent; the flaw affects any first- or third-party plugin relying on the documented authorize semantics.
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
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
Grav 授权问题漏洞
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 1.0.14之前版本存在授权问题漏洞，该漏洞源于未正确执行MenubarController::executeAction()中的授权要求，可能导致具有api.access权限的已认证调用者绕过预期授权，直接调用特权菜单栏操作。
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 0 ~ 1.0.14 -

II. Public POCs for CVE-2026-75836

# POC Description Source Link Shenlong Link
AI-Generated POC Verified env Premium
Qwen3.6-35B-A3B · 8719 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-2026-75836

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Vendor Advisories for CVE-2026-75836 (2)

Same Patch Batch · getgrav · 2026-08-18 · 14 CVEs total

CVE-2026-75837 9.1 CRITICAL Grav before 2.0.14 Privilege Escalation via Group Access Field
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

IV. Related Vulnerabilities

Same product: grav
Same vendor: getgrav
Same weakness: CWE-862

V. Comments for CVE-2026-75836

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