CVE-2025-66296— Grav vulnerable to Privilege Escalation in Grav Admin: Missing Username Uniqueness Check Allows Admin Account Takeover
Get alerts for future matching vulnerabilitiesLog in to subscribe
I. Basic Information for CVE-2025-66296
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗ Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
Grav vulnerable to Privilege Escalation in Grav Admin: Missing Username Uniqueness Check Allows Admin Account Takeover
Source: NVD (National Vulnerability Database)
Vulnerability Description
Grav is a file-based Web platform. Prior to 1.8.0-beta.27, a privilege escalation vulnerability exists in Grav’s Admin plugin due to the absence of username uniqueness validation when creating users. A user with the create user permission can create a new account using the same username as an existing administrator account, set a new password/email, and then log in as that administrator. This effectively allows privilege escalation from limited user-manager permissions to full administrator access. This vulnerability is fixed in 1.8.0-beta.27.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
特权授予不正确
Source: NVD (National Vulnerability Database)
Vulnerability Title
Grav 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Grav是Grav开源的一套可扩展的用于个人博客、小型内容发布平台和单页产品展示的CMS（内容管理系统）。 Grav 1.8.0-beta.27之前版本存在安全漏洞，该漏洞源于创建用户时缺少用户名唯一性验证，可能导致权限提升。
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-2025-66296
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2025-66296
请登录查看更多情报信息。
Same Patch Batch · getgrav · 2025-12-01 · 19 CVEs total
| CVE-2025-66295 | 8.8 HIGH | Grav vulnerable to Path traversal / arbitrary YAML write via user creation leading to Acco |
| CVE-2025-66299 | 8.8 HIGH | Security Sandbox Bypass with SSTI (Server Side Template Injection) in the Grav CMS |
| CVE-2025-66300 | 8.5 HIGH | Grav is vulnerable to Arbitrary File Read |
| CVE-2025-66302 | 6.8 MEDIUM | Grav vulnerable to Path Traversal allowing server files backup |
| CVE-2025-66307 | 6.5 MEDIUM | Grav Admin Plugin vulnerable to User Enumeration & Email Disclosure |
| CVE-2025-66304 | 6.2 MEDIUM | Grav Exposes Password Hashes Leading to privilege escalation |
| CVE-2025-66303 | 4.9 MEDIUM | Grav is vulnerable to a DOS on the admin panel |
| CVE-2025-66306 | 4.3 MEDIUM | Grav vulnerable to Information Disclosure via IDOR in Grav Admin Panel |
| CVE-2025-66301 | Grav ihas Broken Access Control which allows an Editor to modify the page's YAML Frontmatt | |
| CVE-2025-66310 | Grav vulnerable to Cross-Site Scripting (XSS) Stored endpoint `/admin/pages/[page]` parame | |
| CVE-2025-66298 | Grav is vulnerable to Server-Side Template Injection (SSTI) via Forms | |
| CVE-2025-66308 | Grav Admin Plugin vulnerable to Cross-Site Scripting (XSS) Stored endpoint `/admin/config/ | |
| CVE-2025-66309 | Grav vulnerable to Cross-Site Scripting (XSS) Reflected endpoint /admin/pages/[page], para | |
| CVE-2025-66311 | Grav vulnerable to Cross-Site Scripting (XSS) Stored endpoint `/admin/pages/[page]` in Mul | |
| CVE-2025-66297 | Grav vulnerable to Privilege Escalation and Authenticated Remote Code Execution via Twig I | |
| CVE-2025-66294 | Grav is vulnerable to RCE via SSTI through Twig Sandbox Bypass | |
| CVE-2025-66305 | Grav vulnerable to Denial of Service via Improper Input Handling in 'Supported' Parameter | |
| CVE-2025-66312 | Grav Admin Plugin vulnerable to Cross-Site Scripting (XSS) Stored endpoint `/admin/account |
IV. Related Vulnerabilities
Same product: grav
- CVE-2025-66312
Grav Admin Plugin vulnerable to Cross-Site Scripting (XSS) S - CVE-2025-66311
Grav vulnerable to Cross-Site Scripting (XSS) Stored endpoin - CVE-2025-66310
Grav vulnerable to Cross-Site Scripting (XSS) Stored endpoin - CVE-2025-66309
Grav vulnerable to Cross-Site Scripting (XSS) Reflected endp - CVE-2025-66308
Grav Admin Plugin vulnerable to Cross-Site Scripting (XSS) S
Same vendor: getgrav
- CVE-2020-36955
Grav CMS 1.6.30 Admin Plugin 1.9.18 - 'Page Title' Persisten - CVE-2021-47812
GravCMS 1.10.7 - Arbitrary YAML Write/Update (Unauthenticate - CVE-2025-66312
Grav Admin Plugin vulnerable to Cross-Site Scripting (XSS) S - CVE-2025-66311
Grav vulnerable to Cross-Site Scripting (XSS) Stored endpoin - CVE-2025-66310
Grav vulnerable to Cross-Site Scripting (XSS) Stored endpoin
Same weakness: CWE-266
- CVE-2026-8148
NAVER MYBOX Explorer for Windows 安全漏洞 - CVE-2026-43510
CISA manage.get.gov insecure portfolio administrative privil - CVE-2026-43535
OpenClaw < 2026.4.14 - Authorization Context Reuse in Collec - CVE-2026-42368
GeoVision LPC2011/LPC2211 Web Interface privilege escalation - CVE-2026-22337
WordPress Directorist Social Login plugin < 2.1.4 - Privileg
V. Comments for CVE-2025-66296
No comments yet