This vulnerability in jonkern WPListCal (<= 1.3.5) involves improper neutralization of special elements used in SQL commands, leading to SQL Injection. The CVSS 3.1 score is 8.5, indicating high severity, with network attack vector, low attack complexity, requiring low privileges and no user interaction. The impact scope is changed (S:C), with high confidentiality impact, no integrity impact, and low availability impact. No patch or vendor advisory is currently provided, and the product is not a cloud service.

Successful exploitation could allow an attacker with low privileges to execute crafted SQL commands, potentially leading to unauthorized disclosure of sensitive information (high confidentiality impact) and limited denial of service (low availability impact). Integrity is not impacted according to the CVSS vector. There are no known exploits in the wild at this time.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should consider restricting access to the affected plugin and monitor for updates from the vendor. No official patch or workaround is currently documented.