CVE-2026-22602 OpenProject is Vulnerable to User Enumeration via User ID
Low-privileged users can enumerate all user full names by iterating through predictable user IDs in OpenProject.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-22602?
CVE-2026-22602 is a low-severity vulnerability in opf openproject, published on 10 Jan 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
OpenProject is an open-source, web-based project management software. Prior to version 16.6.2, a low‑privileged logged-in user can view the full names of other users. Since user IDs are assigned sequentially and predictably (e.g., 1 to 1000), an attacker can extract a complete list of all users’ full names by iterating through these URLs. The same behavior can also be reproduced via the OpenProject API, allowing automated retrieval of full names through the API as well. This issue has been patched in version 16.6.2. Those who are unable to upgrade may apply the patch manually.
Weakness: CWE-200
Which versions are affected by CVE-2026-22602?
It affects 1 product.
Products include Openproject Openproject.
How do I fix CVE-2026-22602?
No fix has been published for CVE-2026-22602 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-22602 being exploited?
There is no known exploitation of CVE-2026-22602 in the wild and no public exploit code.
Other vulnerabilities in opf openproject
- CVE-2026-34717 OpenProject: SQL Injection in Cost Reporting =n Operator via parse_number_string
- CVE-2026-25763 Command Injection on OpenProject repositories leads to Remote Code Execution
- CVE-2026-24685 OpenProject has Argument Injection on Repository module that allows Arbitrary File Write
- CVE-2026-32698 OpenProject has a SQL Injection via Custom Field Name that can be chained to Remote Code Execution
- CVE-2026-32703 OpenProject's repository files are served with the MIME type allowing them to be used to bypass Content Security Policy
Sources
Also known as GHSA-7fvx-9h6h-g82j.