CodeAstro Online Classroom EUVD-2026-26928

The primary remediation is to upgrade CodeAstro Online Classroom to a patched version released by CodeAstro; however, no specific patch version number is provided in the available data. Contact CodeAstro immediately at https://codeastro.com/ to obtain the latest security update for version 1.0 or migrate to a newer release if available. In the interim, implement the following compensating controls: (1) Apply strict input validation and whitelisting on the fid parameter to accept only expected numeric or alphanumeric formats, rejecting any input containing SQL metacharacters (quotes, dashes, semicolons, comments); (2) enforce parameterized queries or prepared statements in the facultylogin endpoint code to prevent SQL syntax injection; (3) restrict network access to the /OnlineClassroom/facultylogin endpoint using a Web Application Firewall (WAF) rule that blocks requests containing SQL keywords ('union', 'select', 'insert', 'drop', etc.) in the fid parameter; (4) limit database account privileges - ensure the database user account used by the application has only SELECT permissions required for legitimate queries, preventing INSERT, UPDATE, DELETE, or DROP operations even if injection succeeds; (5) monitor authentication logs and SQL query logs for suspicious patterns in facultylogin requests, alerting on multiple failed login attempts or unexpected SQL error messages. These controls have a side effect of potentially impacting legitimate users if input filters are too restrictive; test thoroughly before deployment to production.