CVE-2026-22604— OpenProject is vulnerable to user enumeration via the change password function
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I. Basic Information for CVE-2026-22604
Vulnerability Information
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Vulnerability Title
OpenProject is vulnerable to user enumeration via the change password function
Source: NVD (National Vulnerability Database)
Vulnerability Description
OpenProject is an open-source, web-based project management software. For OpenProject versions from 11.2.1 to before 16.6.2, when sending a POST request to the /account/change_password endpoint with an arbitrary User ID as the password_change_user_id parameter, the resulting error page would show the username for the requested user. Since this endpoint is intended to be called without being authenticated, this allows to enumerate the user names of all accounts registered in an OpenProject instance. This issue has been patched in version 16.6.2.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
信息暴露
Source: NVD (National Vulnerability Database)
Vulnerability Title
OpenProject 信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenProject是OpenProject开源的一个基于Web的项目管理软件。 OpenProject 11.2.1版本至16.6.2之前版本存在信息泄露漏洞，该漏洞源于错误页面泄露用户名信息，可能导致账户枚举。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| opf | openproject | >= 11.2.1, < 16.6.2 | - |
II. Public POCs for CVE-2026-22604
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|---|
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- Release OpenProject 16.6.2 · opf/openproject · GitHubx_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2026-22604
Same Patch Batch · opf · 2026-01-10 · 6 CVEs total
| CVE-2026-22600 | 9.1 CRITICAL | OpenProject is Vulnerable to Arbitrary File Read via ImageMagick SVG Coder |
| CVE-2026-22605 | 4.3 MEDIUM | OpenProject is Vulnerable to Insecure Direct Object Reference in Meetings |
| CVE-2026-22602 | 3.5 LOW | OpenProject is Vulnerable to User Enumeration via User ID |
| CVE-2026-22601 | OpenProject is Vulnerable to Code Execution in E-Mail function | |
| CVE-2026-22603 | OpenProject has no protection against brute-force attacks in the Change Password function |
IV. Related Vulnerabilities
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- CVE-2026-40896
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OpenProject's repository files are served with the MIME type - CVE-2026-32698
OpenProject has a SQL Injection via Custom Field Name that c
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OpenProject has Cross-Project Meeting Agenda Item Injection - CVE-2026-33667
OpenProject: 2FA OTP Verification Missing Rate Limiting - CVE-2026-34717
OpenProject: SQL Injection in Cost Reporting =n Operator via - CVE-2026-32703
OpenProject's repository files are served with the MIME type - CVE-2026-32698
OpenProject has a SQL Injection via Custom Field Name that c
Same weakness: CWE-200
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