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CVE-2026-72832— Grav before 2.0.12 Stored XSS via quoted-attribute bypass

Quick assessment

Affected
getgrav grav
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
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 1.5.2版本至2.0.12版本存在跨站脚本漏洞，该漏洞源于Security::detectXss()函数的事件处理扫描机制存在缺陷，无法正确跨越带引号属性值中的“>”字符，导致检测器与浏览器解析不一致，可能允许无admin.super权限的页面编辑器存储恶意内容，并在任何访客查看页面时触发存储型跨站脚本攻击。

CVSS 5.4 · Medium EPSS 0.31% · P22

Possible ATT&CK Techniques 1 AI

T1059.007 · JavaScript

Affected Version Matrix 1

VendorProduct Version RangeStatus
getgrav grav 1.5.2≤ 2.0.12 affected
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I. Basic Information for CVE-2026-72832

Vulnerability Information
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Vulnerability Title
Grav before 2.0.12 Stored XSS via quoted-attribute bypass
Source: CVE Program / CVE List V5
Vulnerability Description
Grav versions from 1.5.2 through 2.0.12 contain a stored cross-site scripting vulnerability in the Security::detectXss() function (system/src/Grav/Common/Security.php). The event-handler scan is anchored at `<` and uses `[^>]*?`, which cannot cross the first literal `>`; when a `>` appears inside a quoted attribute value the browser keeps the tag open and parses a subsequent event handler (e.g. onerror), so the detector and browser disagree. A page editor without admin.super privileges can save page content such as `<img src=x title=">" onerror=alert(document.domain)>`, which is accepted, stored, and executed in the site origin when any visitor (including unauthenticated users) views the page. Fixed in 2.0.13.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Grav 跨站脚本漏洞
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 1.5.2版本至2.0.12版本存在跨站脚本漏洞，该漏洞源于Security::detectXss()函数的事件处理扫描机制存在缺陷，无法正确跨越带引号属性值中的“>”字符，导致检测器与浏览器解析不一致，可能允许无admin.super权限的页面编辑器存储恶意内容，并在任何访客查看页面时触发存储型跨站脚本攻击。
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 1.5.2 ~ 2.0.12 -

II. Public POCs for CVE-2026-72832

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III. Intelligence Information for CVE-2026-72832

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Vendor Advisories for CVE-2026-72832 (2)

Same Patch Batch · getgrav · 2026-08-14 · 15 CVEs total

CVE-2026-72824 8.8 HIGH Grav before 1.0.13 API Key Scope Bypass via PagesController
CVE-2026-72826 8.8 HIGH Grav before 1.0.13 Scope Bypass via createApiKey
CVE-2026-72819 8.8 HIGH Grav CMS before 2.0.13 Remote Code Execution via ZIP Upload
CVE-2026-72831 8.8 HIGH Grav through 2.0.11 Authentication Bypass via Flex Objects
CVE-2026-72822 8.8 HIGH Grav before 1.0.13 Authentication Bypass via disable2fa
CVE-2026-72830 8.8 HIGH Grav API Plugin before 1.0.13 RCE via ConfigController scope bypass
CVE-2026-72833 8.8 HIGH Grav 1.0.6 through 1.0.11 Privilege Escalation via Scoped API Keys
CVE-2026-72829 8.8 HIGH Grav before 1.0.13 API Key Scope Bypass via UsersController
CVE-2026-72827 8.8 HIGH Grav CMS before 2.0.13 Remote Code Execution via Twig
CVE-2026-72825 7.6 HIGH Grav before 1.0.13 API-key scope cap bypass via ReportsController
CVE-2026-72828 7.2 HIGH Grav before 1.0.13 API Key Scope Bypass via InvitationsController
CVE-2026-72821 5.4 MEDIUM Grav Form Plugin before 9.1.15 Stored XSS via Radio Toggle
CVE-2026-72823 5.4 MEDIUM Grav before 1.0.13 API-key scope cap bypass via DemoController
CVE-2026-72820 4.9 MEDIUM Grav 2.0.11 Path Traversal via Backup Profile Configuration

IV. Related Vulnerabilities

Same product: grav
Same vendor: getgrav
Same weakness: CWE-79

V. Comments for CVE-2026-72832

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