How severe is CVE-2026-0531?

CVE-2026-0531 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-0531 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-0531?

CVE-2026-0531 affects Elastic Kibana. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-0531?

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

Does CVE-2026-0531 have an EU (EUVD) identifier?

Yes. CVE-2026-0531 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-2038.

When was CVE-2026-0531 published?

CVE-2026-0531 was published on 2026-01-13 and last updated on 2026-06-17.

CVE-2026-0531

CVE-2026-0531 is a medium-severity vulnerability in Elastic Kibana with a CVSS 3.x base score of 6.5. 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-770.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (33rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-2038
Weakness: CWE-770
Affected product: Elastic Kibana
Published: 2026-01-13
Last modified: 2026-06-17

Description

Allocation of Resources Without Limits or Throttling (CWE-770) in Kibana Fleet can lead to Excessive Allocation (CAPEC-130) via a specially crafted bulk retrieval request. This requires an attacker to have low-level privileges equivalent to the viewer role, which grants read access to agent policies. The crafted request can cause the application to perform redundant database retrieval operations that immediately consume memory until the server crashes and becomes unavailable to all users.

Frequently asked questions

What is CVE-2026-0531?: Allocation of Resources Without Limits or Throttling (CWE-770) in Kibana Fleet can lead to Excessive Allocation (CAPEC-130) via a specially crafted bulk retrieval request. This requires an attacker to have low-level privileges equivalent to the viewer role, which grants read access to agent policies. The crafted request can cause the application to perform redundant database retrieval operations that immediately consume memory until the server crashes and becomes unavailable to all users.
How severe is CVE-2026-0531?: CVE-2026-0531 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-0531 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-0531?: CVE-2026-0531 affects Elastic Kibana. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-0531?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-0531 have an EU (EUVD) identifier?: Yes. CVE-2026-0531 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-2038.
When was CVE-2026-0531 published?: CVE-2026-0531 was published on 2026-01-13 and last updated on 2026-06-17.

References

https://discuss.elastic.co/t/kibana-8-19-10-9-1-10-9-2-4-security-update-esa-2026-04/384522

Affected products (1)

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

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