CVE-2021-26589: HPE Superdome Flex 280 Firmware

Medium severity, CVSS 6.1. EPSS: 0.6% chance of exploitation in the next 30 days.

A potential security vulnerability has been identified in HPE Superdome Flex Servers. The vulnerability could be remotely exploited to allow Cross Site Scripting (XSS) because the Session Cookie is missing an HttpOnly Attribute. HPE has provided a firmware update to resolve the vulnerability in HPE Superdome Flex Servers.

Affected products

• HPE Superdome Flex 280 Firmware: before 3.40.106 (fixed in 3.40.106)
• HPE Superdome Flex Firmware: before 3.40.106 (fixed in 3.40.106)

Published 2021-10-19. Last modified 2026-06-17.