CVE-2010-0554: Geopp Geo++ Gncaster

High severity, CVSS 7.5. EPSS: 1.5% chance of exploitation in the next 30 days.

The HTTP Authentication implementation in Geo++ GNCASTER 1.4.0.7 and earlier uses the same nonce for all authentication, which allows remote attackers to hijack web sessions or bypass authentication via a replay attack.

Affected products

• Geopp Geo++ Gncaster: up to and including 1.4.0.7; version 1.4.0.0 only

Published 2010-02-04. Last modified 2026-06-16.