# CVE-2026-34383: Admidio CSRF and validation bypass in inventory module

Source: https://junglewise.ai/threats/cve-2026-34383-admidio-csrf-and-validation-bypass-in-inventory-module  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-03-31. Updated: 2026-07-24  
License: CC BY 4.0 with a link back

CVE-2026-34383 · Severity: medium · CVSS 4.3 · Published 2026-03-31

Admidio is an open-source platform used for managing memberships and user data for organizations. A security flaw in its inventory management module allows users with basic access to bypass standard security checks and save unauthorized or malicious data. This could lead to the corruption of inventory records or be used to launch further attacks against other administrators.

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-2026-34383 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-34383 being exploited in the wild.

**How severe is CVE-2026-34383?** Medium severity, with a CVSS score of 4.3, published 31 March 2026.

**Which products and versions are affected?** Admidio < 5.0.8; admidio/admidio (Packagist) ECOSYSTEM:introduced=0,fixed=5.0.8.

**Is there a fix for CVE-2026-34383?** Yes. admidio/admidio (Packagist): upgrade to 5.0.8 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-34383 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-34383?** 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 5.0.8 or later

  ```sh
  composer require admidio/admidio:^5.0.8
  ```


## Technical details

A vulnerability exists in the 'item_save' endpoint of Admidio's inventory module due to improper handling of the 'imported' POST parameter. When this parameter is set to true, the application's ItemService::save() method skips both CSRF token verification and server-side form validation (FormPresenter). An authenticated attacker can exploit this by sending a direct POST request with raw, unsanitized data. This bypass allows for Cross-Site Request Forgery (CSRF) attacks and the injection of arbitrary data into the database, which may result in stored Cross-Site Scripting (XSS) if the data is later rendered without proper encoding. The issue is fixed in version 5.0.8 by ensuring validation occurs regardless of the import flag.

## Affected products

- Admidio Admidio < 5.0.8

## Identifiers

- CVE-2026-34383
- GHSA-4rwm-c5mj-wh7x

## Timeline

- 2026-03-27: advisory: GitHub Security Advisory published
- 2026-03-31: disclosed: CVE-2026-34383 published
- 2026-03-31: patched: Fixed in version 5.0.8

## References

- [https://github.com/Admidio/admidio/commit/00494b95dfe847af8b938e4397e5d909d8f36839](https://github.com/Admidio/admidio/commit/00494b95dfe847af8b938e4397e5d909d8f36839)
- [https://github.com/Admidio/admidio/security/advisories/GHSA-4rwm-c5mj-wh7x](https://github.com/Admidio/admidio/security/advisories/GHSA-4rwm-c5mj-wh7x)

## Related threats

- [Admidio improper access control in event registration](https://junglewise.ai/threats/cve-2026-117554-admidio-before-5-0-17-contains-an-improper-access-control)
- [Admidio information disclosure in RSS weblinks feed](https://junglewise.ai/threats/cve-2026-111916-admidio-before-5-0-16-contains-an-information-disclosure)
- [Admidio broken access control in inventory module](https://junglewise.ai/threats/cve-2026-111914-admidio-from-5-0-11-before-5-0-16-contains-a-broken-access)
- [Admidio authorization bypass via pdfl export mode](https://junglewise.ai/threats/cve-2026-111913-admidio-from-5-0-0-before-5-0-16-contains-an-authorization)
- [Admidio forum topic authorization bypass in ForumService::saveTopic()](https://junglewise.ai/threats/cve-2026-111912-admidio-from-5-0-0-before-5-0-16-contains-an-insecure-direct)