CVE-2021-33611— Reflected cross-site scripting in vaadin-menu-bar webjar resources in Vaadin 14
Quick assessment
Affected
Vaadin Vaadin
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.
vaadin vaadin是芬兰vaadin公司的一个用于Web应用程序开发的开源平台。Vaadin 平台包括一组Web 组件、一个 Java Web 框架以及一组工具和应用程序启动器。 Vaadin存在跨站脚本漏洞，该漏洞源于WEB应用缺少对客户端数据的正确验证。攻击者可利用该漏洞执行客户端代码。
Possible ATT&CK Techniques 1 AI
T1189 · Drive-by Compromise
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I. Basic Information for CVE-2021-33611
Vulnerability Information
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Vulnerability Title
Reflected cross-site scripting in vaadin-menu-bar webjar resources in Vaadin 14
Source: CVE Program / CVE List V5
Vulnerability Description
Missing output sanitization in test sources in org.webjars.bowergithub.vaadin:vaadin-menu-bar versions 1.0.0 through 1.2.0 (Vaadin 14.0.0 through 14.4.4) allows remote attackers to execute malicious JavaScript in browser by opening crafted URL
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/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
vaadin 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
vaadin vaadin是芬兰vaadin公司的一个用于Web应用程序开发的开源平台。Vaadin 平台包括一组Web 组件、一个 Java Web 框架以及一组工具和应用程序启动器。 Vaadin存在跨站脚本漏洞，该漏洞源于WEB应用缺少对客户端数据的正确验证。攻击者可利用该漏洞执行客户端代码。
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 |
|---|---|---|---|---|
| Vaadin | Vaadin | 14.0.0 ~ unspecified | - |
|
| Vaadin | vaadin-menu-bar | 1.0.0 ~ unspecified | - |
|
II. Public POCs for CVE-2021-33611
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Patches & Fixes for CVE-2021-33611 (1)
-
https://github.com/vaadin/vaadin-menu-bar/pull/126 x_refsource_CONFIRM
Other References for CVE-2021-33611 (1)
-
https://vaadin.com/security/cve-2021-33611 x_refsource_CONFIRM
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CVE-2025-15022
Cross-site scripting in Action caption
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V. Comments for CVE-2021-33611
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