CVE-2026-24006 is a vulnerability classified under CWE-770, concerning allocation of resources without limits or throttling in the lxsmnsyc seroval library, a JavaScript serialization tool designed to handle complex data structures beyond the capabilities of JSON.stringify. Versions prior to 1.4.1 do not impose limits on the depth of object serialization, allowing an attacker to craft deeply nested objects that cause the serialization process to exceed the maximum call stack size. This results in a stack overflow, leading to application crashes and denial of service (DoS). The vulnerability does not compromise confidentiality or integrity but severely impacts availability by causing runtime failures. The flaw can be exploited remotely without authentication or user interaction by sending maliciously crafted data to an application using the vulnerable seroval versions. In response, version 1.4.1 introduced a depthLimit parameter in serialization and deserialization methods, which throws an error if the depth exceeds the defined threshold, effectively mitigating the risk. No known exploits are currently reported in the wild, but the vulnerability's characteristics make it a significant risk for applications relying on seroval for data processing.

For European organizations, the primary impact of CVE-2026-24006 is on service availability. Applications that utilize seroval for serialization of JavaScript objects, especially those handling complex or user-supplied data, may experience crashes or denial of service when processing maliciously crafted inputs. This can disrupt business operations, degrade user experience, and potentially lead to downtime in critical systems. While confidentiality and integrity are not directly affected, the availability impact can indirectly affect business continuity and trust. Industries with high reliance on web applications, real-time data processing, or microservices architectures that incorporate seroval are particularly vulnerable. Additionally, organizations that do not promptly update dependencies or lack robust input validation mechanisms face increased risk. The absence of known exploits in the wild suggests a window for proactive mitigation before widespread attacks occur.

1. Upgrade all instances of the lxsmnsyc seroval library to version 1.4.1 or later, which includes the depthLimit parameter to prevent excessive recursion. 2. Implement strict input validation and sanitization to limit the depth and complexity of objects accepted for serialization. 3. Employ runtime monitoring and anomaly detection to identify unusual serialization patterns or crashes indicative of exploitation attempts. 4. Integrate automated dependency management tools to track and update vulnerable libraries promptly. 5. Conduct code reviews and security testing focusing on serialization logic and resource consumption. 6. Where upgrading is not immediately feasible, consider sandboxing or isolating components that perform serialization to contain potential crashes. 7. Educate developers about secure serialization practices and the risks of processing untrusted data without limits.