CVE-2026-4819 Search Guard audit logs can contain under certain conditions user credentials
Attackers with access to audit logs can read user credentials logged during Kibana login, requiring audit logging to be enabled.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-4819?
CVE-2026-4819 is a medium-severity vulnerability in floragunn Search Guard FLX, published on 31 Mar 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
In Search Guard FLX versions from 1.0.0 up to 4.0.1, the audit logging feature might log user credentials from users logging into Kibana.
Which versions are affected by CVE-2026-4819?
It affects 1 product.
Products include Search-Guard Flx.
How do I fix CVE-2026-4819?
No fix has been published for CVE-2026-4819 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-4819 being exploited?
There is no known exploitation of CVE-2026-4819 in the wild and no public exploit code.
Other vulnerabilities in floragunn Search Guard FLX
Sources
Also known as GHSA-vx77-83rf-gfvg.