CVE-2022-24906 is a medium-severity vulnerability affecting Nextcloud Deck, a Kanban-style project and personal management application integrated within the Nextcloud ecosystem. The vulnerability is categorized under CWE-200, which involves the exposure of sensitive information to unauthorized actors. Specifically, this flaw allows unauthorized users to access the full path of the Nextcloud Deck application on the server. The exposed path information can potentially aid attackers in further reconnaissance activities by revealing directory structures and deployment details that are typically intended to remain confidential. The affected versions include all releases prior to 1.2.11, versions from 1.4.0 up to but not including 1.4.6, and versions from 1.5.0 up to but not including 1.5.4. There is no available workaround, making upgrading to the fixed versions critical. Although no known exploits have been reported in the wild, the information disclosure could facilitate more targeted attacks if combined with other vulnerabilities or misconfigurations. The vulnerability does not require authentication or user interaction, increasing its risk profile as any unauthorized user can potentially retrieve this sensitive information remotely. The exposure primarily impacts confidentiality, as it leaks internal path information, but does not directly affect data integrity or availability. The Nextcloud Deck app is widely used by organizations for project management, making this vulnerability relevant for entities relying on Nextcloud for collaboration and productivity.

For European organizations, the exposure of the full application path in Nextcloud Deck can increase the risk of targeted cyberattacks. Attackers gaining knowledge of directory structures can craft more effective exploits, potentially leading to privilege escalation, unauthorized access, or lateral movement within the network. This is particularly concerning for organizations handling sensitive or regulated data, such as financial institutions, healthcare providers, and government agencies, where Nextcloud is deployed for secure collaboration. The vulnerability could also undermine trust in internal project management tools, impacting operational efficiency. While the direct impact is limited to information disclosure, the indirect consequences could be significant if attackers leverage this information alongside other vulnerabilities. Given the widespread adoption of Nextcloud in Europe, especially in countries with strong data protection regulations like Germany and France, the vulnerability poses a notable risk to compliance and data security.

The primary and only effective mitigation is to upgrade the Nextcloud Deck application to one of the patched versions: 1.2.11, 1.4.6, or 1.5.4. Organizations should prioritize this upgrade in their patch management cycles. Additionally, administrators should audit access controls to ensure that unauthorized users cannot access sensitive endpoints or directories. Implementing web application firewalls (WAFs) with rules to detect and block suspicious requests targeting Nextcloud Deck endpoints can provide an additional layer of defense. Monitoring server logs for unusual access patterns related to the Deck app path can help detect exploitation attempts early. Network segmentation to isolate Nextcloud servers and limiting exposure to the internet can reduce the attack surface. Finally, organizations should review their overall Nextcloud deployment security posture, including regular vulnerability scanning and penetration testing, to identify and remediate other potential weaknesses.