CVE-2026-27027 is a vulnerability identified in the Everon api.everon.io platform, which is widely used for managing electric vehicle (EV) charging stations. The core issue is that authentication identifiers for charging stations are publicly accessible through web-based mapping platforms integrated with Everon's API. This exposure falls under CWE-522, which concerns insufficient protection of credentials. Because these identifiers are accessible without any authentication or user interaction, an attacker can remotely retrieve them with minimal effort. The vulnerability affects all versions of the product, indicating a systemic design or configuration flaw. The CVSS 3.1 base score of 6.5 reflects a medium severity, with attack vector being network-based (AV:N), no privileges required (PR:N), no user interaction (UI:N), and impact limited to confidentiality and integrity (C:L/I:L/A:N). Although no exploits have been reported in the wild, the availability of authentication identifiers could enable attackers to impersonate legitimate devices or users, potentially leading to unauthorized control or data manipulation within EV charging infrastructure. This could disrupt service integrity and compromise user privacy. The lack of patch links suggests that a formal fix or mitigation guidance has not yet been published, emphasizing the need for immediate defensive measures by affected organizations.

The exposure of charging station authentication identifiers can have several impacts on organizations and EV infrastructure operators worldwide. Confidentiality is compromised as sensitive credentials are publicly accessible, potentially allowing attackers to gather intelligence on charging station deployments and user patterns. Integrity is at risk because attackers could use these identifiers to impersonate legitimate devices or users, leading to unauthorized access or manipulation of charging station operations, such as altering charging sessions or billing data. Although availability is not directly impacted, indirect effects such as service disruption or denial of service could occur if attackers misuse the credentials to interfere with station operations. For organizations managing large EV charging networks, this vulnerability could lead to reputational damage, financial losses, and regulatory consequences, especially in regions with strict data protection laws. The ease of exploitation and the broad scope (all versions affected) increase the urgency of addressing this vulnerability. The lack of known exploits in the wild reduces immediate risk but does not eliminate the threat, as attackers may develop exploits once the vulnerability becomes widely known.

To mitigate CVE-2026-27027, organizations should implement the following specific measures: 1) Restrict public access to charging station authentication identifiers by reviewing and modifying web-based mapping platform configurations to ensure sensitive credentials are not exposed. 2) Employ API gateway controls and access management policies to enforce authentication and authorization for any API endpoints exposing sensitive data. 3) Implement network segmentation and firewall rules to limit external access to internal API services managing charging station credentials. 4) Monitor logs and network traffic for unusual access patterns or attempts to retrieve authentication identifiers. 5) Coordinate with Everon to obtain official patches or updates once available and apply them promptly. 6) Consider rotating or invalidating exposed authentication identifiers and issuing new credentials to affected charging stations. 7) Educate operational teams about the risks of credential exposure and enforce strict credential management policies. 8) If possible, use encryption or tokenization for authentication identifiers to reduce the risk of misuse if exposed. These steps go beyond generic advice by focusing on configuration, access control, monitoring, and credential lifecycle management specific to this vulnerability.