Insertion of Sensitive Information Into Sent Data in Kibana Leading to Credential Disclosure

published 2026-11-03 5 d ago modified 2026-11-03 5 d ago also EUVD-2026-116074

cvss: 6.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 27%
public exploits: 0; none known

Insertion of Sensitive Information Into Sent Data (CWE-201) in Kibana Observability onboarding can lead to disclosure of the credentials that Kibana uses to connect to Elasticsearch. When these credentials are embedded in the Elasticsearch host URLs in the Kibana configuration, an authenticated user with the privileges to onboard Observability data can obtain them. The user can then access Elasticsearch directly with the privileges of the Kibana service account, which are outside the privileges granted to that user.

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 5 d ago (2026-11-03)

Exploit prediction

0.34% chance of exploitation in the next 30 days, higher than 27% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Affected products

Elastic Kibana

Classification

Weakness

CWE-201 Insertion of Sensitive Information Into Sent Data

References

discuss.elastic.co /t/kibana-8-19-24-9-4-9-9-5-6-security-update-esa-2026-204/391358

Sources

CVE List CVE-2026-115293
NVD CVE-2026-115293

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Summary