CVE-2026-4818 Some management operations on data streams are not properly restricted when user does not have the necessary privileges
Users lacking necessary privileges can execute management operations on data streams, potentially leading to unauthorized data modification or privilege escalation.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-4818?
CVE-2026-4818 is a medium-severity missing authorization vulnerability in floragunn Search Guard FLX, published on 31 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
In Search Guard FLX versions from 3.0.0 up to 4.0.1, there exists an issue which allows users without the necessary privileges to execute some management operations against data streams.
Which versions are affected by CVE-2026-4818?
It affects 1 product.
Products include Search-Guard Flx.
How do I fix CVE-2026-4818?
No fix has been published for CVE-2026-4818 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-4818 being exploited?
There is no known exploitation of CVE-2026-4818 in the wild and no public exploit code.
Other vulnerabilities in floragunn Search Guard FLX
Sources
Also known as GHSA-73g6-24f6-wqv9.