CVE-2026-4799
Open redirect vulnerability in Search Guard Kibana Plugin via manipulated requests
Description
In Search Guard FLX up to version 4.0.1, it is possible to use specially crafted requests to redirect the user to an untrusted URL.
INFO
Published Date :
March 31, 2026, 3:16 p.m.
Last Modified :
April 3, 2026, 3:20 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | 9f311a02-c44f-4938-8530-9219246b8255 | ||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update Search Guard FLX to version 4.0.2 or later.
- Review and enforce secure redirect policies.
- Validate user input for redirect parameters.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-4799.
| URL | Resource |
|---|---|
| https://docs.search-guard.com/latest/changelog-searchguard-flx-4_1_0 | Release Notes |
| https://search-guard.com/cve-advisory/ | Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-4799 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-4799
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-4799 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-4799 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Apr. 03, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:search-guard:flx:*:*:*:*:*:*:*:* versions up to (excluding) 4.1.0 Added Reference Type floragunn GmbH: https://docs.search-guard.com/latest/changelog-searchguard-flx-4_1_0 Types: Release Notes Added Reference Type floragunn GmbH: https://search-guard.com/cve-advisory/ Types: Vendor Advisory -
New CVE Received by [email protected]
Mar. 31, 2026
Action Type Old Value New Value Added Description In Search Guard FLX up to version 4.0.1, it is possible to use specially crafted requests to redirect the user to an untrusted URL. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N Added CWE CWE-601 Added Reference https://docs.search-guard.com/latest/changelog-searchguard-flx-4_1_0 Added Reference https://search-guard.com/cve-advisory/