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TI-2026-25248 Aliases CVE-2026-32757GHSA-4wr4-f2qf-x5wj

Admidio: HTMLPurifier Bypass in eCard Message Allows HTML Email Injection

Priority MEDIUM 58CWE-79Published · Updated

Key facts

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

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

Summary

Admidio is an open-source user management solution. In versions 5.0.6 and below, the eCard send handler uses a raw $_POST['ecard_message'] value instead of the HTMLPurifier-sanitized $formValues['ecard_message'] when constructing the greeting card HTML. This allows an authenticated attacker to inject arbitrary HTML and JavaScript into greeting card emails sent to other members, bypassing the server-side HTMLPurifier sanitization that is properly applied to the ecard_message field during form validation. An attack can result in any member or role receiving phishing content that appears legitimate, crossing from the web application into recipients' email clients. This issue has been fixed in version 5.0.7.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00236 14th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed admidio (Admidio): 5.0.7admidio/admidio (Packagist): 5.0.7

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Admidioadmidiobefore 5.0.75.0.7Patch availableCNA
—admidio/admidio (Packagist)before 5.0.75.0.7Patch availableGHSA-4wr4-f2qf-x5wj
  • admidio VendorAdmidio Affected before 5.0.7 Fixed in 5.0.7 Patch available CNA
  • admidio/admidio (Packagist) Vendor— Affected before 5.0.7 Fixed in 5.0.7 Patch available GHSA-4wr4-f2qf-x5wj

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:admidio:admidio:*:*:*:*:*:*:*:*before 5.0.7VulnerableAdmidio
  • cpe:2.3:a:admidio:admidio:*:*:*:*:*:*:*:* Versions before 5.0.7 Vulnerable ·Admidio

Remediation

  • Fix · CNA admidio (Admidio) Fixed in 5.0.7
  • Fix · GHSA-4wr4-f2qf-x5wj admidio/admidio (Packagist) Fixed in 5.0.7 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-32757
  2. 2026-10-03 Alias added: GHSA-4wr4-f2qf-x5wj

References

Exploit 1

Advisory 1

Other 2

  • 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