CVE-2026-21694 is a vulnerability classified under CWE-284 (Improper Access Control) affecting the open-source time tracking software Titra, developed by kromitgmbh. Versions 0.99.49 and earlier allow authenticated users to bypass access restrictions on private projects. Specifically, users with low privileges can view and edit time entries belonging to other users in projects they have not been granted access to. This flaw arises from insufficient enforcement of access control policies within the application’s project and time entry management modules. The vulnerability can be exploited remotely over the network without user interaction, but requires the attacker to have at least low-level authenticated access. The impact includes unauthorized disclosure and modification of sensitive time tracking data, which could lead to privacy violations, inaccurate billing, or internal fraud. The vulnerability does not affect system availability. The issue was publicly disclosed on January 7, 2026, and is addressed in Titra version 0.99.50. No known exploits are currently reported in the wild. The CVSS v3.1 base score is 6.8, reflecting medium severity with network attack vector, high confidentiality and integrity impact, and low attack complexity.

For European organizations, this vulnerability poses risks primarily to confidentiality and integrity of project time tracking data. Unauthorized access to private project time entries can lead to exposure of sensitive operational information, such as employee work hours, project timelines, and resource allocation. This may result in privacy breaches, competitive intelligence leaks, or manipulation of time records affecting payroll and billing accuracy. Organizations relying on Titra for internal or client-facing time tracking could suffer reputational damage and financial losses if attackers exploit this flaw. Although the vulnerability does not impact availability, the integrity compromise could undermine trust in project management processes. The risk is heightened in sectors with strict data protection regulations like GDPR, where unauthorized data access can trigger compliance violations and penalties.

European organizations using Titra should immediately upgrade to version 0.99.50 or later, where the access control issue is fixed. Until the upgrade is applied, organizations should restrict Titra access to trusted users only and enforce strong authentication mechanisms to limit exposure. Conduct an audit of user permissions and project access controls to ensure no excessive privileges are granted. Implement network segmentation and firewall rules to limit access to the Titra application server from untrusted networks. Monitor logs for unusual access patterns or unauthorized modifications to time entries. Educate users about the importance of safeguarding their credentials to prevent privilege escalation. Consider deploying additional application-layer access control mechanisms or integrating Titra with centralized identity and access management (IAM) solutions to enforce stricter authorization policies. Regularly review and update software dependencies and apply security patches promptly.