CVE-2025-36223: IBM Openpages

Medium severity, CVSS 6.1. EPSS: 0.2% chance of exploitation in the next 30 days.

IBM OpenPages 9.0 and 9.1 is vulnerable to HTTP header injection, caused by improper validation of input by the HOST headers. This could allow an attacker to conduct various attacks against the vulnerable system, including cross-site scripting, cache poisoning or session hijacking.

Affected products

• IBM Openpages: version 9.0.0 only; version 9.1.0 only

Published 2025-11-12. Last modified 2026-06-17.