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TI-2021-19616 Aliases CVE-2021-43810

Cross-site Scripting (XSS) when redirect an url

Priority MEDIUM 46CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

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.

Why it matters now

EPSS 0.05076 92nd percentileScored 2026-11-07
Fix Fixed admidio (Admidio): 4.0.12

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
Admidioadmidiobefore 4.0.124.0.12Patch availableCNA
  • admidio VendorAdmidio Affected before 4.0.12 Fixed in 4.0.12 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:admidio:admidio:*:*:*:*:*:*:*:*before 4.0.12VulnerableAdmidio
  • cpe:2.3:a:admidio:admidio:*:*:*:*:*:*:*:* Versions before 4.0.12 Vulnerable ·Admidio

Remediation

  • Fix · CNA admidio (Admidio) Fixed in 4.0.12

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-43810

References

Patch 3

Advisory 1

  • TI-2026-25286 Admidio is Missing Authorization and CSRF Protection on Document and Folder Deletion CVSS 3.1CRITICAL 9.1
  • TI-2024-25222 Admidio has Blind SQL Injection in ecard_send.php CVSS 3.1CRITICAL 10.0
  • TI-2024-25764 Admidio Vulnerable to RCE via Arbitrary File Upload in Message Attachment CVSS 3.1CRITICAL 9.1
  • TI-2026-25247 Admidio: Unrestricted File Upload via CSRF Token Validation Bypass in Documents & Files Module CVSS 3.1HIGH 8.8
  • TI-2026-26667 Admidio: Unauthenticated Access to Role-Restricted documents via neutralized .htaccess CVSS 3.1HIGH 7.5
  • TI-2026-25282 Admidio: Second-Order SQL Injection via List Configuration (lsc_special_field, lsc_sort, lsc_filter) CVSS 3.1HIGH 8.0
See all 31 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences