CVE-2026-2235 identifies a SQL Injection vulnerability in the HGiga C&Cm@il package olln-base, categorized under CWE-89, which involves improper neutralization of special elements used in SQL commands. This flaw allows authenticated remote attackers to inject arbitrary SQL queries into the backend database, enabling unauthorized reading of sensitive data. The vulnerability requires the attacker to have some level of authentication (PR:L - privileges required are low), but no user interaction is needed (UI:N), and the attack complexity is low (AC:L). The CVSS 4.0 score of 7.1 reflects a high severity, primarily due to the potential for significant confidentiality impact (VC:H), while integrity and availability impacts are none. The vulnerability is exploitable over the network (AV:N) without additional security controls (SC:N). Although no public exploits are currently known, the lack of patches or mitigations increases risk. The root cause is insufficient input sanitization or lack of parameterized queries in the affected component, allowing attackers to craft malicious SQL commands that the database executes. This can lead to unauthorized disclosure of user data, credentials, or other sensitive information stored in the database. The vulnerability affects version 0 of the product, which may indicate an early or initial release. The vendor has not yet provided patches, increasing urgency for organizations to implement compensating controls.

For European organizations, this vulnerability poses a significant risk to the confidentiality of sensitive data managed by the HGiga C&Cm@il package. Given that mail systems often handle personal communications, credentials, and potentially business-critical information, unauthorized data disclosure could lead to privacy violations, regulatory non-compliance (e.g., GDPR), reputational damage, and financial losses. The ability for an attacker with low privileges to extract database contents remotely increases the attack surface, especially in environments where authentication controls may be weak or credentials compromised. While the vulnerability does not directly impact system integrity or availability, the exposure of confidential information can facilitate further attacks such as phishing, identity theft, or lateral movement within networks. European organizations in sectors like government, finance, healthcare, and telecommunications that rely on HGiga’s mail solutions are particularly vulnerable. The absence of known exploits currently provides a window for proactive mitigation, but the risk of future exploitation remains high.

Organizations should immediately assess their deployment of the HGiga C&Cm@il package olln-base and restrict access to authenticated users with minimal privileges. Implement strict input validation and sanitization on all user-supplied data to prevent injection of SQL commands. Where possible, modify the application to use parameterized queries or prepared statements to eliminate direct concatenation of SQL commands. Network segmentation and application-layer firewalls can limit exposure of the vulnerable service to untrusted networks. Monitor logs for unusual database query patterns indicative of injection attempts. Enforce strong authentication mechanisms and rotate credentials regularly to reduce the risk of compromised accounts being used for exploitation. Until an official patch is released, consider deploying Web Application Firewalls (WAFs) with custom rules to detect and block SQL injection payloads targeting the affected component. Engage with the vendor for updates and apply patches promptly once available. Conduct security awareness training to reduce the risk of credential compromise that could facilitate exploitation.