# CVE-2026-34372: Sulu CMS authentication bypass in contact sub-entities API

Source: https://junglewise.ai/threats/cve-2026-34372-sulu-cms-authentication-bypass-in-contact-sub-entities-api  
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-2026-34372 · Severity: medium · CVSS 4 · Published 2026-03-31

Sulu is an open-source content management system used to build and manage websites. A security flaw allowed users with basic administrative access to view sensitive contact information they were not authorized to see. This could lead to the unauthorized exposure of contact details stored within the system. The issue has been fixed in the latest software updates.

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

## Quick answers

**Is CVE-2026-34372 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-34372 being exploited in the wild.

**How severe is CVE-2026-34372?** Medium severity, with a CVSS score of 4, published 31 March 2026.

**Which products and versions are affected?** sulu/sulu (Packagist) ECOSYSTEM:introduced=1.0.0,fixed=2.6.22; Sulu 1.0.0 to < 2.6.22, 3.0.0 to < 3.0.5.

**Is there a fix for CVE-2026-34372?** Yes. sulu/sulu (Packagist): upgrade to 2.6.22 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-34372 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-34372?** Check whether you run sulu/sulu (Packagist) or Sulu 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

- sulu/sulu (Packagist): upgrade to 2.6.22 or later

  ```sh
  composer require sulu/sulu:^2.6.22
  ```


## Technical details

An authentication bypass (CWE-288) exists in Sulu CMS versions 1.0.0 through 2.6.21 and 3.0.0 through 3.0.4. The vulnerability is located in the admin API endpoints responsible for contact sub-entities. While the system requires a user to have at least one administrative role, it fails to properly verify specific permissions for contact data when accessed through these alternate API paths. An authenticated attacker with low-level admin access can exploit this to retrieve contact information. The issue is resolved in versions 2.6.22 and 3.0.5.

## Affected products

- Sulu Sulu 1.0.0 to < 2.6.22, 3.0.0 to < 3.0.5

## Identifiers

- CVE-2026-34372
- GHSA-6h7h-m7p5-hjqp

## Timeline

- 2026-03-27: patched: Versions 2.6.22 and 3.0.5 released
- 2026-03-31: disclosed: Public advisory published

## References

- [https://github.com/sulu/sulu/releases/tag/2.6.22](https://github.com/sulu/sulu/releases/tag/2.6.22)
- [https://github.com/sulu/sulu/releases/tag/3.0.5](https://github.com/sulu/sulu/releases/tag/3.0.5)
- [https://github.com/sulu/sulu/security/advisories/GHSA-6h7h-m7p5-hjqp](https://github.com/sulu/sulu/security/advisories/GHSA-6h7h-m7p5-hjqp)

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