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CVE-2026-72821— Grav Form Plugin before 9.1.15 Stored XSS via Radio Toggle

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 9.1.15之前版本存在跨站脚本漏洞，该漏洞源于使用Twig

CVSS 5.4 · Medium EPSS 0.24% · P13

Affected Version Matrix 2

VendorProduct Version RangeStatus
getgrav grav < 9.1.15 affected
9.1.15 unaffected
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I. Basic Information for CVE-2026-72821

Vulnerability Information
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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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 Form Plugin before 9.1.15 Stored XSS via Radio Toggle
Source: CVE Program / CVE List V5
Vulnerability Description
Grav Form plugin versions before 9.1.15 contain a stored cross-site scripting vulnerability in radio and toggle field option labels rendered with the Twig |raw filter. Attackers with form authoring permissions can inject HTML and script payloads in option labels that execute in the browsers of visitors and administrators viewing the form.
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 9.1.15之前版本存在跨站脚本漏洞，该漏洞源于使用Twig |raw过滤器渲染radio和toggle字段选项标签，可能导致具有表单编写权限的攻击者注入HTML和脚本负载，在查看表单的访问者和管理员浏览器中执行。
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 ~ 9.1.15 -

II. Public POCs for CVE-2026-72821

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III. Intelligence Information for CVE-2026-72821

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Vendor Advisories for CVE-2026-72821 (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-2026-72832 5.4 MEDIUM Grav before 2.0.12 Stored XSS via quoted-attribute bypass
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-2026-72821

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