SQL Injection in Halex Coursesel
CVE-2026-5537
A security vulnerability has been detected in halex CourseSEL up to 1.1.0. Affected by this vulnerability is the function check_sel of the file Apps/Index/Controller/IndexController.class.php of the component HTTP GET Parameter Handler. The manipulation of the argument seid leads to sql injection. It is possible to initiate the attack remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
EPSS: 0.002 (16.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
Affected products
- Halex Coursesel — versions 1.0, 1.1.0
Weakness classification (CWE)
References
- cna@vuldb.com (technical-description, vdb-entry)
- cna@vuldb.com (signature, permissions-required)
- cna@vuldb.com (third-party-advisory)
- cna@vuldb.com (exploit)
Frequently asked questions
- What is CVE-2026-5537?
- CVE-2026-5537 is a medium-severity vulnerability in Halex Coursesel, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 6.3/10. Published 2026-04-05.
- How severe is CVE-2026-5537?
- Medium severity. CVSS v3 base score is 6.3 out of 10.