CVE-2026-26093 identifies a command injection vulnerability in Owl opds version 2.2.0.4, classified under CWE-77, which involves improper neutralization of special elements used in system commands. This flaw allows an attacker to inject and execute arbitrary commands on the underlying operating system by sending specially crafted network requests to the vulnerable Owl opds service. The vulnerability does not require user interaction or elevated privileges, and the attack complexity is low, meaning it can be exploited remotely with minimal effort. The CVSS 4.0 base score of 8.7 reflects the high impact on confidentiality, integrity, and availability, as successful exploitation could lead to full system compromise, data theft, or service disruption. The vulnerability is currently published but lacks publicly known exploits or patches, indicating a window of exposure. The root cause is insufficient input validation and sanitization of command parameters within the Owl opds application, which allows injection of shell metacharacters or commands. This vulnerability is critical for environments where Owl opds is exposed to untrusted networks or users, as it can be leveraged to gain unauthorized control over affected systems.

The impact of CVE-2026-26093 is severe for organizations using Owl opds 2.2.0.4, as it enables remote attackers to execute arbitrary commands without authentication or user interaction. This can lead to complete system compromise, unauthorized data access or modification, disruption of service availability, and potential lateral movement within networks. Critical infrastructure, enterprise environments, and any organization relying on Owl opds for content distribution or management could face operational outages, data breaches, and reputational damage. The ease of exploitation increases the likelihood of targeted attacks or automated scanning by threat actors. Additionally, the lack of current patches or mitigations may prolong exposure, increasing risk. Organizations with internet-facing Owl opds instances are particularly vulnerable, and the threat could extend to supply chain partners if compromised systems are interconnected.

1. Immediately restrict network access to Owl opds instances by implementing firewall rules or network segmentation to limit exposure to trusted users and systems only. 2. Monitor network traffic and system logs for unusual or suspicious command execution patterns indicative of injection attempts. 3. Apply strict input validation and sanitization on all user-supplied data within Owl opds, especially parameters used in system commands, to neutralize special characters and prevent injection. 4. Employ application-layer firewalls or web application firewalls (WAFs) with custom rules to detect and block command injection payloads targeting Owl opds. 5. Regularly update and patch Owl opds software once vendor patches become available to remediate the vulnerability. 6. Conduct security code reviews and penetration testing focused on command injection vectors in Owl opds deployments. 7. Implement least privilege principles for the Owl opds service account to limit the impact of potential command execution. 8. Educate administrators and security teams on this vulnerability to ensure rapid detection and response.