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CVE-2021-3785— Cross-site Scripting (XSS) - Stored in yourls/yourls

Quick assessment

Affected
yourls yourls/yourls
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.

YOURLS是一套基于PHP的开源短链接平台。 yourls 存在跨站脚本漏洞，该漏洞源于程序在网页生成过程中容易受到不正确的输入和跨站脚本影响。

AI Predicted 5.4 Difficulty: Easy EPSS 0.72% · P51
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I. Basic Information for CVE-2021-3785

Vulnerability Information
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Vulnerability Title
Cross-site Scripting (XSS) - Stored in yourls/yourls
Source: CVE Program / CVE List V5
Vulnerability Description
yourls 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
YOURLS 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
YOURLS是一套基于PHP的开源短链接平台。 yourls 存在跨站脚本漏洞，该漏洞源于程序在网页生成过程中容易受到不正确的输入和跨站脚本影响。
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
yourls yourls/yourls unspecified ~ 1.8.2 -

II. Public POCs for CVE-2021-3785

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2021-3785

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Patches & Fixes for CVE-2021-3785 (1)

Vendor Advisories for CVE-2021-3785 (1)

IV. Related Vulnerabilities

Same product: yourls/yourls
Same vendor: yourls
Same weakness: CWE-79

V. Comments for CVE-2021-3785

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