CVE-2026-54364: Gladinet CentreStack

Medium severity, CVSS 6.5. EPSS: 0.4% chance of exploitation in the next 30 days.

CentreStack before 17.4 contains a session variable injection vulnerability that allows unauthenticated attackers to inject arbitrary session variables by embedding newline and tab characters into a crafted AccountName parameter posted to the SelectProvider.aspx endpoint. Attackers can exploit the lack of input sanitization in the custom session serialization format to inject a resellerid session variable, bypassing the IsValidRSession authentication check and gaining unauthorized access to management pages.

Affected products

• Gladinet CentreStack: before 17.4 (fixed in 17.4)

Published 2026-07-30. Last modified 2026-07-30.