CVE-2026-42611— Grav: Stored XSS via Tag Injection
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 2.0.0-beta.2之前版本存在跨站脚本漏洞，该漏洞源于SVG元素注入，可能导致低权限用户造成XSS攻击，进而泄露系统信息并可能实现远程代码执行。
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I. Basic Information for CVE-2026-42611
Vulnerability Information
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Vulnerability Title
Grav: Stored XSS via Tag Injection
Source: CVE Program / CVE List V5
Vulnerability Description
Grav is a file-based Web platform. Prior to 2.0.0-beta.2, a low-privileged (with the ability to create a page) user can cause XSS with the injection of svg element. The XSS can further be escalated to dump the entire system information available under /admin/config/info whenever a Super Admin visits the page; which can further be chained with the use of admin-nonce to do a complete server compromise (RCE). This vulnerability is fixed in 2.0.0-beta.2.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:H
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 2.0.0-beta.2之前版本存在跨站脚本漏洞，该漏洞源于SVG元素注入，可能导致低权限用户造成XSS攻击，进而泄露系统信息并可能实现远程代码执行。
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
II. Public POCs for CVE-2026-42611
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2026-42611 (1)
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🔗 Stored XSS via Tag Injection · Advisory · getgrav/grav · GitHub Read full article x_refsource_CONFIRM
Same Patch Batch · getgrav · 2026-05-11 · 13 CVEs total
| CVE-2026-42613 | 9.4 CRITICAL | Grav: Privilege Escalation via Missing Server-Side Validation of groups/access |
| CVE-2026-42607 | 9.1 CRITICAL | Grav: Remote Code Execution (RCE) via Malicious Plugin ZIP Upload in Direct Install Featur |
| CVE-2026-42843 | 8.8 HIGH | grav-plugin-api: Grav API Privilege Escalation to Super Admin |
| CVE-2026-42612 | 8.5 HIGH | Grav: Publisher-Level Stored XSS via Unquoted Event Attributes |
| CVE-2026-42609 | 8.1 HIGH | Grav: Administrative Account Disruption and Privilege De-escalation via User Overwrite Log |
| CVE-2026-44738 | 7.7 HIGH | Grav: Twig sandbox allows editor-role users to exfiltrate all plugin secrets via Config::t |
| CVE-2026-42610 | 6.5 MEDIUM | Grav: Sensitive Information Disclosure via Accounts Service Bypass |
| CVE-2026-42842 | 5.4 MEDIUM | grav-plugin-form: XSS via Taxonomy Field Values in Admin Panel |
| CVE-2026-42608 | Grav: Unauthenticated Path Traversal & Arbitrary File Write in FormFlash component. | |
| CVE-2026-42845 | Grav: Anonymous Page Content Overwrite via Form File Upload filename Override | |
| CVE-2026-42841 | Grav: Stored XSS via Markdown media attribute() action in Grav CMS | |
| CVE-2026-44737 | grav-plugin-admin: Stored Cross-Site Scripting (XSS) Reflected endpoint /admin/pages/[page |
IV. Related Vulnerabilities
Same product: grav
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CVE-2026-100670
Grav CMS 2.0.14 through 2.0.24 Privilege Escalation via Blue -
CVE-2026-100671
Grav before 2.0.25 Session Cookie Theft via Twig Sandbox -
CVE-2026-100669
Grav before 2.0.25 Sensitive File Disclosure via Case-Variat -
CVE-2026-100667
grav-plugin-login 3.8.7 through 3.9.6 Two-Factor Authenticat -
CVE-2026-100668
Grav before 2.0.25 Sandbox Escape via array Filter
Same vendor: getgrav
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CVE-2026-100673
Grav Data Manager before 1.4.5 Stored XSS via item-detail vi -
CVE-2026-100672
grav-plugin-comments before 1.2.11 Unauthenticated Informati -
CVE-2026-100671
Grav before 2.0.25 Session Cookie Theft via Twig Sandbox -
CVE-2026-100670
Grav CMS 2.0.14 through 2.0.24 Privilege Escalation via Blue -
CVE-2026-100669
Grav before 2.0.25 Sensitive File Disclosure via Case-Variat
Same weakness: CWE-79
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CVE-2026-54049
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Vvveb: Stored XSS in Vvveb via sanitizeHTML() filter bypass -
CVE-2026-101890
Prime Mover < 2.2.1 Stored XSS via Package Metadata
V. Comments for CVE-2026-42611
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