CVE-2026-2690 is a SQL injection (CVSS 7.3, high) in itsourcecode Event Management System 1.0. The Username argument of /admin/ajax.php?action=login is placed into a database query unsafely. The record lists no fixed version, so restrict access to the admin area and fix the query in code.
What's affected
The record names itsourcecode Event Management System 1.0 only. The affected file is /admin/ajax.php?action=login and the argument is Username.
No patched release is listed, and the record says a public exploit exists. This kind of project is often a sample or hobby application, so check whether you should be running it on a public server at all.
How to check if you're exposed
Check whether the application is deployed and reachable. Look for the path /admin/ajax.php?action=login in your web server access logs and watch for unusual values in the Username parameter. If the application runs against a database shared with other systems, treat that as part of the exposure.
What to do now
- Find any deployment of this application and confirm the version.
- Take it off the public internet, or put it behind a VPN or an allow list.
- If you maintain the code, switch the affected query to a prepared statement with bound parameters.
- Give the application's database user only the permissions it needs, and never a shared admin account.
- Rotate admin credentials stored by the application if you find signs of probing.
Why it matters
The record lists CWE-89 (SQL injection) and CWE-74. A request value is joined into the query text, so crafted input changes the meaning of the query. The standard fix is parameterized queries, which keep data and SQL separate.
The same application has other SQL injection CVEs in this series, so a single patch to one query will not make it safe. The record does not mark this CVE as known exploited, although it says a public exploit exists.
Quick check
What is the real fix?
Use prepared statements for every query that touches request data. A single patched query is not enough in an application with several injectable pages.
Sources
- CVE-2026-2690 on Gold
- NVD record for CVE-2026-2690, published 19 February 2026
- VulDB entry listed in the record: https://vuldb.com/?id.346490
Last reviewed: 19 October 2026.
