CVE-2024-52290 is a cross-site scripting (XSS) vulnerability identified in LF Edge's eKuiper, a lightweight IoT data analytics and stream processing engine. The vulnerability affects versions prior to 2.1.0. Specifically, users with modification rights to the service, such as those assigned the kuiperUser role, can inject malicious scripts into the Connection Configuration key parameter named 'Name' (confKey). This injection occurs because the application does not properly neutralize input during web page generation, leading to improper handling of user-supplied data (CWE-79). When a user with access rights, for example an administrator, attempts to delete the maliciously crafted key, the embedded script executes in the victim's browser context. This can lead to the theft of sensitive information, session hijacking, or other malicious actions performed under the victim's privileges. The vulnerability requires that the attacker has at least limited privileges (modification rights) and that the victim interacts with the malicious configuration by attempting deletion, implying user interaction is necessary. The CVSS v3.1 score is 6.3 (medium severity), reflecting network attack vector, low attack complexity, privileges required, user interaction required, and high confidentiality impact but limited integrity and no availability impact. Version 2.1.0 of eKuiper addresses and fixes this vulnerability by properly sanitizing the input to prevent script injection. There are no known exploits in the wild at this time, but the vulnerability poses a risk in environments where multiple users have varying levels of access to the eKuiper service interface.

For European organizations deploying LF Edge eKuiper in IoT or edge computing environments, this vulnerability could lead to unauthorized disclosure of sensitive data or session tokens if an attacker with modification rights injects malicious scripts. Given that eKuiper is used for real-time data analytics and stream processing in IoT scenarios, exploitation could compromise the integrity of operational data or lead to lateral movement within the network if administrative credentials are stolen. The impact is particularly relevant for sectors with critical IoT deployments such as manufacturing, smart cities, energy, and transportation, which are prevalent in Europe. Confidentiality breaches could expose sensitive operational data or personally identifiable information processed by IoT devices. However, the requirement for modification privileges and user interaction limits the attack surface somewhat. Still, insider threats or compromised user accounts could leverage this vulnerability to escalate access or disrupt operations. The absence of availability impact means service disruption is unlikely, but data confidentiality and integrity risks remain significant.

European organizations should immediately upgrade all affected eKuiper instances to version 2.1.0 or later to eliminate the vulnerability. Until upgrades are feasible, restrict modification rights strictly to trusted users and implement strong access controls and monitoring on accounts with kuiperUser or equivalent roles. Employ web application firewalls (WAFs) with custom rules to detect and block suspicious payloads targeting the confKey parameter. Conduct regular audits of configuration keys for unexpected or suspicious entries. Educate administrators and users with deletion privileges about the risk of interacting with untrusted configuration keys. Additionally, implement multi-factor authentication (MFA) for all users with modification rights to reduce the risk of account compromise. Network segmentation should isolate IoT analytics platforms from broader enterprise networks to limit lateral movement in case of exploitation. Finally, monitor logs for unusual deletion attempts or configuration changes that could indicate exploitation attempts.