Information disclosure in Elastic Kibana
CVE-2026-49088
Insertion of Sensitive Information into Log File (CWE-532) in Kibana can lead to information disclosure. When the optional application performance monitoring (APM) instrumentation is enabled, sensitive request header values could be recorded in application logs, where they may be accessible to operators with log access.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.003 (23.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 23rd percentile — 23.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Elastic Kibana — versions 8.0.0, 9.1.0, 9.0.0
Weakness classification (CWE)
References
- discuss.elastic.co/t/kibana-8-18-9-8-19-6-9-0-8-9-1-6-security-update-esa-2026-… (Mitigation, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-49088?
- CVE-2026-49088 is a medium-severity vulnerability in Elastic Kibana, classified under Insertion of Sensitive Information into Log File. CVSS score: 4.4/10. Published 2026-07-01.
- How severe is CVE-2026-49088?
- Medium severity. CVSS v3 base score is 4.4 out of 10.