Medium · CVSS 5.3CVE-2026-109328

Admidio 5.0.0 before 5.0.15 Unauthenticated Stored XSS via Registration NameCVE-2026-109328

Answer in brief

CVE-2026-109328 records a Medium severity (CVSS 5.3) vulnerability in Admidio 5.0.0 before 5.0.15 Unauthenticated Stored XSS via Registration Name. The current sources do not mark it as known exploited. The current feed maps Admidio/admidio (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 12, 2026Updated Oct 12, 2026Source checked Oct 12, 2026First seen by HOL Oct 12, 2026Material review Oct 12, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 5.3
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 5.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Admidio/admidio (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Admidio/admidiogeneric	>=5.0.0 <5.0.15	5.0.15

Recommended response

Check inventory. Check lockfiles and deployed manifests for Admidio/admidio.
Review the reported fix. Update Admidio/admidio to 5.0.15 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Oct 12, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Oct 12, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Oct 12, 2026

Sources and claim methodology

Upstream source description

Admidio 5.0.0 before 5.0.15 contains an unauthenticated stored cross-site scripting vulnerability in RegistrationPresenter.php, which inserts the raw FIRST_NAME registration value into an unencoded data-message attribute. Attackers can register with a double-quoted event handler that executes JavaScript in an administrator's session when they hover the entry on the Manage registrations page.

Quoted source text, attributed separately from HOL analysis.