XSS in Admidio
CVE-2026-32757
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.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (15.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 16th percentile — 15.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.000
Affected products
- Admidio — versions < 5.0.7
Weakness classification (CWE)
References
- github.com/Admidio/admidio/security/advisories/GHSA-4wr4-f2qf-x5wj (Exploit, Mitigation, Vendor Advisory)
- github.com/Admidio/admidio/releases/tag/v5.0.7 (Release Notes)
Frequently asked questions
- What is CVE-2026-32757?
- CVE-2026-32757 is a medium-severity vulnerability in Admidio, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-03-20.
- How severe is CVE-2026-32757?
- Medium severity. CVSS v3 base score is 5.4 out of 10.