OpenProject is an open-source, web-based project management software. Prior to version 16.6.2, OpenProject’s unauthenticated password-change endpoint (/account/change_password) was not protected by the same brute-force safeguards that apply to the normal login form. In affected versions, an attacker who can guess or enumerate user IDs can send unlimited password-change requests for a given account without triggering lockout or other rate-limiting controls. This allows automated password-guessing (e.g., with wordlists of common passwords) against valid accounts. Successful guessing results in full account compromise for the targeted user and, depending on that user’s role, can lead to further privilege escalation inside the application. This issue has been patched in version 16.6.2. Those who are unable to upgrade may apply the patch manually.
Metrics
Affected Vendors & Products
References
History
Sat, 10 Jan 2026 01:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | OpenProject is an open-source, web-based project management software. Prior to version 16.6.2, OpenProject’s unauthenticated password-change endpoint (/account/change_password) was not protected by the same brute-force safeguards that apply to the normal login form. In affected versions, an attacker who can guess or enumerate user IDs can send unlimited password-change requests for a given account without triggering lockout or other rate-limiting controls. This allows automated password-guessing (e.g., with wordlists of common passwords) against valid accounts. Successful guessing results in full account compromise for the targeted user and, depending on that user’s role, can lead to further privilege escalation inside the application. This issue has been patched in version 16.6.2. Those who are unable to upgrade may apply the patch manually. | |
| Title | OpenProject has no protection against brute-force attacks in the Change Password function | |
| Weaknesses | CWE-307 | |
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| Metrics |
cvssV4_0
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-01-10T01:06:28.742Z
Reserved: 2026-01-07T21:50:39.533Z
Link: CVE-2026-22603
No data.
Status : Received
Published: 2026-01-10T02:15:49.200
Modified: 2026-01-10T02:15:49.200
Link: CVE-2026-22603
No data.
OpenCVE Enrichment
No data.