CVE-2025-30945 is a medium-severity vulnerability classified under CWE-862, which pertains to missing authorization controls. This vulnerability affects the Taskbuilder product up to version 4.0.3. The core issue is that certain functionalities within Taskbuilder are accessible without proper Access Control List (ACL) enforcement, allowing unauthorized users to access features or perform actions that should be restricted. According to the CVSS 3.1 vector (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N), the vulnerability is remotely exploitable over the network without requiring any privileges or user interaction. The impact is limited to a low confidentiality loss, with no impact on integrity or availability. No known exploits are currently reported in the wild, and no patches have been linked yet. The vulnerability was reserved in March 2025 and published in June 2025. The lack of proper authorization checks means that attackers could potentially access sensitive information or functionality that should be restricted, which could lead to information disclosure or unauthorized data access within affected systems running Taskbuilder. However, the absence of integrity or availability impacts limits the scope of damage to confidentiality only.

For European organizations using Taskbuilder, this vulnerability could lead to unauthorized access to sensitive or restricted functionalities within the application. This could result in leakage of confidential information or exposure of internal workflows, potentially violating data protection regulations such as GDPR if personal or sensitive data is involved. Since the vulnerability does not affect integrity or availability, it is less likely to cause system downtime or data manipulation. However, unauthorized access could still undermine trust and compliance posture. Organizations in sectors with strict regulatory requirements (e.g., finance, healthcare, government) could face increased risk of compliance violations and reputational damage if this vulnerability is exploited. The remote and unauthenticated nature of the exploit increases the risk profile, as attackers do not need prior access or user interaction to attempt exploitation.

1. Immediate mitigation should focus on restricting network exposure of Taskbuilder instances, such as placing them behind firewalls or VPNs to limit access to trusted users only. 2. Implement additional access control mechanisms at the network or application gateway level to enforce authorization policies externally until patches are available. 3. Monitor logs and access patterns for unusual or unauthorized attempts to access Taskbuilder functionalities. 4. Engage with the vendor or community to obtain patches or updates addressing this vulnerability as soon as they become available. 5. Conduct an internal audit of Taskbuilder usage to identify sensitive functionalities that could be exploited and apply compensating controls such as role-based access restrictions or manual approval workflows. 6. Educate administrators and users about the risk and encourage prompt reporting of suspicious activity related to Taskbuilder. 7. Consider isolating Taskbuilder environments or limiting their integration with critical systems to reduce potential impact.