The vulnerability identified as CVE-2025-31100 in Mojoomla School Management (up to version 1.93.1) is classified under CWE-434, which involves unrestricted upload of files with dangerous types. This allows an attacker with low privileges to upload malicious files such as web shells to the server, potentially gaining remote code execution capabilities. The CVSS 3.1 base score is 9.9, reflecting network attack vector, low attack complexity, no user interaction, and high impact on confidentiality, integrity, and availability. The vulnerability is published and recognized but lacks vendor-provided patch or mitigation details.

Successful exploitation of this vulnerability can lead to complete compromise of the affected web server, including unauthorized remote code execution, data breach, and service disruption. The attacker can upload a web shell, which may allow persistent access and control over the system. Given the critical CVSS score, the impact on confidentiality, integrity, and availability is high.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict file upload permissions, implement strict file type validation, and monitor for suspicious upload activity as interim mitigations. Avoid exposing the affected software to untrusted networks or users with upload privileges.