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CVE-2021-43810— Cross-site Scripting (XSS) when redirect an url

Quick assessment

Affected
Admidio admidio
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Admidio是Admidio团队的一套开源的成员管理系统。该系统支持成员列表、事件管理、留言簿、相册和下载等功能。 Admidio 4.0.12 之前的版本中存在跨站脚本漏洞，该漏洞源于 redirect.php 没有正确验证 url 参数的值。

CVSS 8.8 · High EPSS 5.08% · P92

Public Exploits 1

Nuclei · 1 CVE-2021-43810.yaml [template]

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2021-43810

Vulnerability Information
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Vulnerability Title
Cross-site Scripting (XSS) when redirect an url
Source: CVE Program / CVE List V5
Vulnerability Description
Admidio is a free open source user management system for websites of organizations and groups. A cross-site scripting vulnerability is present in Admidio prior to version 4.0.12. The Reflected XSS vulnerability occurs because redirect.php does not properly validate the value of the url parameter. Through this vulnerability, an attacker is capable to execute malicious scripts. This issue is patched in version 4.0.12.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/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
Admidio 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Admidio是Admidio团队的一套开源的成员管理系统。该系统支持成员列表、事件管理、留言簿、相册和下载等功能。 Admidio 4.0.12 之前的版本中存在跨站脚本漏洞，该漏洞源于 redirect.php 没有正确验证 url 参数的值。
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)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
Admidio admidio < 4.0.12 -

II. Public POCs for CVE-2021-43810

# POC Description Source Link Shenlong Link
1 A cross-site scripting vulnerability is present in Admidio prior to version 4.0.12. The reflected cross-site scripting vulnerability occurs because redirect.php does not properly validate the value of the url parameter. Through this vulnerability, an attacker is capable to execute malicious scripts. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-43810.yaml POC Details
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III. Intelligence Information for CVE-2021-43810

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Patches & Fixes for CVE-2021-43810 (2)

Vendor Advisories for CVE-2021-43810 (1)

Other References for CVE-2021-43810 (1)

IV. Related Vulnerabilities

Same product: admidio
Same vendor: Admidio
Same weakness: CWE-79

V. Comments for CVE-2021-43810

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