How severe is CVE-2026-49088?

CVE-2026-49088 has a CVSS 3.x base score of 4.4, rated medium severity. It is exploitable over network with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-49088 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-49088?

CVE-2026-49088 affects Elastic Kibana. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-49088?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2026-49088 published?

CVE-2026-49088 was published on 2026-07-01 and last updated on 2026-07-02.

CVE-2026-49088

CVE-2026-49088 is a medium-severity vulnerability in Elastic Kibana with a CVSS 3.x base score of 4.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-532.

Key facts

Severity: Medium (CVSS 3.x base score 4.4)
EPSS exploit prediction: 0% (11th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-532
Affected product: Elastic Kibana
Published: 2026-07-01
Last modified: 2026-07-02

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2026-49088?: CVE-2026-49088 has a CVSS 3.x base score of 4.4, rated medium severity. It is exploitable over network with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-49088 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-49088?: CVE-2026-49088 affects Elastic Kibana. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-49088?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2026-49088 published?: CVE-2026-49088 was published on 2026-07-01 and last updated on 2026-07-02.

References

https://discuss.elastic.co/t/kibana-8-18-9-8-19-6-9-0-8-9-1-6-security-update-esa-2026-50

Affected products (1)

cpe:2.3:a:elastic:kibana:*:*:*:*:*:*:*:*

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