CVE-2026-54364 CentreStack < 17.4 Session Injection via SelectProvider.aspx
Unauthenticated attackers can inject session variables to bypass authentication and access management pages in CentreStack.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-54364?
CVE-2026-54364 is a medium-severity authentication bypass vulnerability in Gladinet CentreStack, published on 30 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-116
Which versions are affected by CVE-2026-54364?
How do I fix CVE-2026-54364?
No fix has been published for CVE-2026-54364 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-54364 being exploited?
There is no known exploitation of CVE-2026-54364 in the wild and no public exploit code.
Sources
Also known as GHSA-g6j6-rqg9-wq7x.