# CVE-2026-52784: OpenProject CSRF privilege escalation in user management endpoint

Source: https://junglewise.ai/threats/cve-2026-52784-openproject-csrf-privilege-escalation-in-user-management-endpoint  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-06-26. Updated: 2026-06-26  
License: CC BY 4.0 with a link back

CVE-2026-52784 · Severity: high · CVSS 8.8 · Published 2026-06-26

OpenProject is a web-based project management platform used for team collaboration and task tracking. A security flaw allows an attacker to trick the system into granting administrative privileges to a user account without the victim's knowledge. This could lead to a full takeover of the project management environment and unauthorized access to sensitive corporate data.

## Quick answers

**Is CVE-2026-52784 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-52784 being exploited in the wild.

**How severe is CVE-2026-52784?** High severity, with a CVSS score of 8.8, published 26 June 2026.

**Which products and versions are affected?** opf OpenProject < 17.3.3, >= 17.4.0 < 17.4.1.

**Is there a fix for CVE-2026-52784?** A patch was published on 2026-06-26: Fixes confirmed in versions 17.3.3 and 17.4.1 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-52784 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-52784?** Check whether anything you run is named in the advisory. 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.

## Technical details

A Cross-Site Request Forgery (CSRF) vulnerability exists in OpenProject's user management component. The flaw stems from how Turbo Drive auto-injects CSRF tokens into forms appended via Turbo Stream actions, combined with a 'dispatch_event' action that can trigger an automatic form submission. An attacker can exploit this by sending a malicious payload to the '/users/:id' endpoint using the 'user[admin]' POST parameter. Successful exploitation allows a low-privileged user to elevate their own or another user's privileges to administrator. The vulnerability is addressed in versions 17.3.3 and 17.4.1.

## Affected products

- opf OpenProject < 17.3.3, >= 17.4.0 < 17.4.1

## Timeline

- 2026-06-08: advisory: GitHub advisory published by vendor
- 2026-06-26: disclosed: NVD publication date
- 2026-06-26: patched: Fixes confirmed in versions 17.3.3 and 17.4.1

## References

- [https://github.com/opf/openproject/security/advisories/GHSA-6crw-7f5r-4qj9](https://github.com/opf/openproject/security/advisories/GHSA-6crw-7f5r-4qj9)