# CVE-2026-47234: Admidio sensitive information disclosure in application logs

Source: https://junglewise.ai/threats/cve-2026-47234-admidio-sensitive-information-disclosure-in-application-logs  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-29. Updated: 2026-05-29  
License: CC BY 4.0 with a link back

CVE-2026-47234 · Severity: medium · CVSS 4.4 · Published 2026-05-29

Admidio, a web-based membership management system, contains a security flaw where it records sensitive user login information into its system logs. When debug mode is enabled, the software writes active session IDs and persistent 'remember me' tokens in plain text to the log files. An individual with access to these logs—such as a system administrator or an attacker who has gained limited server access—could use this information to hijack user accounts and gain unauthorized access to the organization's data.

Technologies: [Admidio](https://junglewise.ai/threats/technologies/admidio), [admidio/admidio (Packagist)](https://junglewise.ai/threats/technologies/admidio-admidio). Vendors: [Admidio](https://junglewise.ai/threats/vendors/admidio), [Packagist](https://junglewise.ai/threats/vendors/packagist).

## Quick answers

**Is CVE-2026-47234 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-47234 being exploited in the wild.

**How severe is CVE-2026-47234?** Medium severity, with a CVSS score of 4.4, published 29 May 2026.

**Which products and versions are affected?** Admidio <= 5.0.9; admidio/admidio (Packagist) <= 5.0.9, ECOSYSTEM:introduced=0,fixed=5.0.10.

**Is there a fix for CVE-2026-47234?** Yes. admidio/admidio (Packagist): upgrade to 5.0.10 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-47234 attacked?** It is attacked with local access, in a network appliance.

**Am I affected by CVE-2026-47234?** Check whether you run Admidio or admidio/admidio (Packagist) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- admidio/admidio (Packagist): upgrade to 5.0.10 or later

  ```sh
  composer require admidio/admidio:^5.0.10
  ```


## Technical details

Admidio versions 5.0.9 and earlier are vulnerable to sensitive information disclosure in the logging component. When debug logging is enabled, the `Session::setCookie()` and `Session::start()` methods in `src/Session/Entity/Session.php` write raw cookie values and session IDs to the application log. This includes the `ADMIDIO_*_SESSION_ID` and the persistent `ADMIDIO_*_AUTO_LOGIN_ID`. An attacker with read access to the log files, backups, or log aggregation services can extract these bearer tokens to perform session hijacking or maintain long-term unauthorized access to user accounts. The issue is addressed in version 5.0.10 by redacting these sensitive values before they are committed to the logs.

## Affected products

- Admidio Admidio <= 5.0.9

## Identifiers

- CVE-2026-47234
- GHSA-mch8-wf3h-6x88

## Timeline

- 2026-05-25: disclosed
- 2026-05-29: advisory: GHSA-mch8-wf3h-6x88 published

## References

- [https://api.github.com/users/0x2face](https://api.github.com/users/0x2face)
- [https://github.com/0x2face](https://github.com/0x2face)
- [https://api.github.com/users/0x2face/gists%7B/gist_id%7D](https://api.github.com/users/0x2face/gists%7B/gist_id%7D)
- [https://api.github.com/users/0x2face/repos](https://api.github.com/users/0x2face/repos)
- [https://avatars.githubusercontent.com/u/227258610?v=4](https://avatars.githubusercontent.com/u/227258610?v=4)
- [https://api.github.com/users/0x2face/events%7B/privacy%7D](https://api.github.com/users/0x2face/events%7B/privacy%7D)

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