This vulnerability (CVE-2026-40766) is an SQL Injection issue classified under CWE-89 in the MasterStudy LMS product by StylemixThemes. It affects versions up to 3.7.25 and involves improper neutralization of special elements in SQL commands related to subscriber functionality. The CVSS 3.1 score is 8.5, indicating high severity with network attack vector, low attack complexity, and low privileges required. The impact includes high confidentiality loss and low availability impact, with no integrity impact. No vendor advisory or patch information is currently available, and no known exploits are reported in the wild.

Successful exploitation can lead to unauthorized disclosure of sensitive subscriber data (high confidentiality impact) and limited denial of service (low availability impact). Integrity of data is not impacted according to the CVSS vector. The vulnerability can be exploited remotely with low complexity and requires only low privileges without user interaction.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should monitor for vendor updates and consider applying any recommended temporary mitigations once available. No official patch or workaround is currently documented.