CVE-2023-3689: Bylancer Quickqr

Critical severity, CVSS 9.8. EPSS: 0.5% chance of exploitation in the next 30 days.

A vulnerability classified as critical was found in Bylancer QuickQR 6.3.7. Affected by this vulnerability is an unknown functionality of the file /blog of the component GET Parameter Handler. The manipulation of the argument s leads to sql injection. The attack can be launched remotely. The associated identifier of this vulnerability is VDB-234235. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Affected products

• Bylancer Quickqr: version 6.3.7 only

Published 2023-07-16. Last modified 2026-06-17.