How severe is CVE-2026-33458?

CVE-2026-33458 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-33458 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-33458?

CVE-2026-33458 affects Elastic Kibana. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-33458?

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

Does CVE-2026-33458 have an EU (EUVD) identifier?

Yes. CVE-2026-33458 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-20519.

When was CVE-2026-33458 published?

CVE-2026-33458 was published on 2026-04-08 and last updated on 2026-06-17.

CVE-2026-33458

CVE-2026-33458 is a medium-severity vulnerability in Elastic Kibana with a CVSS 3.x base score of 6.3. 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-918.

Key facts

Severity: Medium (CVSS 3.x base score 6.3)
EPSS exploit prediction: 0% (13th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-20519
Weakness: CWE-918
Affected product: Elastic Kibana
Published: 2026-04-08
Last modified: 2026-06-17

Description

Server-Side Request Forgery (CWE-918) in Kibana One Workflow can lead to information disclosure. An authenticated user with workflow creation and execution privileges can bypass host allowlist restrictions in the Workflows Execution Engine, potentially exposing sensitive internal endpoints and data.

Frequently asked questions

What is CVE-2026-33458?: Server-Side Request Forgery (CWE-918) in Kibana One Workflow can lead to information disclosure. An authenticated user with workflow creation and execution privileges can bypass host allowlist restrictions in the Workflows Execution Engine, potentially exposing sensitive internal endpoints and data.
How severe is CVE-2026-33458?: CVE-2026-33458 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-33458 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-33458?: CVE-2026-33458 affects Elastic Kibana. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-33458?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-33458 have an EU (EUVD) identifier?: Yes. CVE-2026-33458 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-20519.
When was CVE-2026-33458 published?: CVE-2026-33458 was published on 2026-04-08 and last updated on 2026-06-17.

References

https://discuss.elastic.co/t/kibana-9-3-3-security-update-esa-2026-28/385815

Affected products (1)

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

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