CVE-2026-2822 is a SQL injection vulnerability identified in JeecgBoot, an open-source rapid development platform widely used for enterprise applications. The vulnerability affects versions 3.9.0 and 3.9.1 and resides in the backend interface component, specifically within the /jeecgboot/sys/dict/loadDict/airag_app,1,create_by function. This function improperly handles the 'keyword' parameter, allowing an attacker to inject malicious SQL code remotely without requiring user interaction. The vulnerability requires low privileges (PR:L) but no authentication or user interaction, making it easier to exploit in environments where the attacker has limited access. The CVSS 4.0 score of 5.3 reflects a medium severity, considering the attack vector is network-based (AV:N), with low complexity (AC:L), and no privileges required (PR:L). Exploitation could lead to unauthorized data retrieval, modification, or deletion, potentially compromising the confidentiality, integrity, and availability of backend databases. Although no public patches have been linked yet and no known exploits are reported in the wild, the public disclosure of the vulnerability increases the risk of exploitation attempts. The vulnerability highlights the need for secure coding practices, especially input validation and parameterized queries, in backend interfaces handling user-supplied data.

The primary impact of CVE-2026-2822 is unauthorized access and manipulation of backend database information within JeecgBoot-powered applications. Attackers exploiting this SQL injection can retrieve sensitive data, alter records, or disrupt application functionality, leading to data breaches, loss of data integrity, and potential denial of service. Organizations relying on JeecgBoot for critical business processes may face operational disruptions and reputational damage. Since the vulnerability can be exploited remotely without user interaction, it increases the attack surface significantly. The medium severity rating suggests moderate risk, but the actual impact depends on the sensitivity of the data stored and the deployment context. Enterprises in sectors such as finance, healthcare, and government using JeecgBoot could experience significant consequences if exploited.

To mitigate CVE-2026-2822, organizations should immediately audit and sanitize all inputs to the affected backend interface, particularly the 'keyword' parameter in the /jeecgboot/sys/dict/loadDict/airag_app,1,create_by function. Implement parameterized queries or prepared statements to prevent SQL injection. If patches become available from JeecgBoot maintainers, apply them promptly. In the absence of official patches, consider deploying Web Application Firewalls (WAFs) with custom rules to detect and block SQL injection patterns targeting the vulnerable endpoint. Conduct thorough code reviews and penetration testing focused on input validation and injection flaws. Restrict access to the backend interface to trusted networks or authenticated users where possible. Monitor logs for suspicious query patterns or repeated failed attempts indicative of exploitation attempts. Educate developers on secure coding standards to prevent similar vulnerabilities in future releases.