What’s Vulnerable › Vulnerabilities

CVE-2019-13423

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-08-23 · updated 2026-06-17
• Weakness: CWE-287

Description

Search Guard Kibana Plugin versions before 5.6.8-7 and before 6.x.y-12 had an issue that an authenticated Kibana user could impersonate as kibanaserver user when providing wrong credentials when all of the following conditions a-c are true: a) Kibana is configured to use Single-Sign-On as authentication method, one of Kerberos, JWT, Proxy, Client certificate. b) The kibanaserver user is configured to use HTTP Basic as the authentication method. c) Search Guard is configured to use an SSO authentication domain and HTTP Basic at the same time

Affected products

• floragunn Search Guard: before 5.6.8-7; from 6.1.0-8 before 6.2.3-12 — fixed in 5.6.8-7, 6.2.3-12

How to fix

Upgrade to a fixed version: floragunn Search Guard 5.6.8-7, 6.2.3-12. Check the vendor advisory for mitigations.

References

• https://docs.search-guard.com/6.x-25/changelog-kibana-6.x-12
• https://search-guard.com/cve-advisory/
• https://docs.search-guard.com/6.x-25/changelog-kibana-6.x-12
• https://search-guard.com/cve-advisory/

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