CVE-2023-38314: Opennds Captive Portal

Medium severity, CVSS 6.5. EPSS: 0.9% chance of exploitation in the next 30 days.

An issue was discovered in OpenNDS Captive Portal before version 10.1.2. It has a NULL pointer dereference in preauthenticated() that can be triggered with a crafted GET HTTP request with a missing redirect query string parameter. Triggering this issue results in crashing OpenNDS (a Denial-of-Service condition). Affected OpenNDS Captive Portal before version 10.1.2 fixed infixed in OpenWrt master, OpenWrt 23.05 and OpenWrt 22.03 on28. August 2023 by updating OpenNDS to version 10.1.3.

Affected products

• Opennds Captive Portal: before 10.1.2 (fixed in 10.1.2)

Published 2023-11-17. Last modified 2026-06-17.