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CVE-2021-4020— Cross-site Scripting (XSS) - Stored in meetecho/janus-gateway

Quick assessment

Affected
meetecho meetecho/janus-gateway
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.

Meetecho Janus是Meetecho公司的一款WebRTC（网页即时通信）服务器。 Meetecho janus gateway 存在跨站脚本漏洞，该漏洞源于软件缺少对用户提交的参数的有效的过滤与验证。

AI Predicted 6.1 Difficulty: Easy EPSS 0.84% · P57

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2021-4020

Vulnerability Information
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Vulnerability Title
Cross-site Scripting (XSS) - Stored in meetecho/janus-gateway
Source: CVE Program / CVE List V5
Vulnerability Description
janus-gateway is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Source: CVE Program / CVE List V5
CVSS Information
N/A
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
Meetecho Janus 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Meetecho Janus是Meetecho公司的一款WebRTC（网页即时通信）服务器。 Meetecho janus gateway 存在跨站脚本漏洞，该漏洞源于软件缺少对用户提交的参数的有效的过滤与验证。
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
meetecho meetecho/janus-gateway unspecified ~ 0.11.6 -

II. Public POCs for CVE-2021-4020

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III. Intelligence Information for CVE-2021-4020

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Patches & Fixes for CVE-2021-4020 (1)

Vendor Advisories for CVE-2021-4020 (1)

IV. Related Vulnerabilities

Same product: meetecho/janus-gateway
Same vendor: meetecho
Same weakness: CWE-79

V. Comments for CVE-2021-4020

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