CVE-2026-22603

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.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/opf/openproject/commit/2b394b9ba5af1e5d96a64d7d452d4d44598a4c7f	Patch
https://github.com/opf/openproject/pull/21272	Issue Tracking
https://github.com/opf/openproject/releases/tag/v16.6.2	Release Notes
https://github.com/opf/openproject/security/advisories/GHSA-93x5-prx9-x239	Patch Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:openproject:openproject:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-01-10 02:15

Updated : 2026-01-14 22:27

NVD link : CVE-2026-22603

Mitre link : CVE-2026-22603

CVE.ORG link : CVE-2026-22603

JSON object : View

Products Affected

openproject

openproject

CWE

CWE-307

Improper Restriction of Excessive Authentication Attempts

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