Threadlinqs IntelligenceStart free

VulnerabilityCVE-2026-63261Published 2026-07-21

CVE-2026-63261 — Elastic Kibana

medium

As of 2026-07-22, CVE-2026-63261 is a MEDIUM-severity vulnerability in Elastic Kibana, CVSS v3.1 6.5, EPSS 0.2% (14.4th percentile). No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-63261 as of 2026-07-22; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

CVSS v3.1
6.5/10Medium
EPSS
0.2%Higher than 14.4% of scored CVEs
CISA KEV
NoNot in the KEV catalog
Tracked threats
0None linked yet
Priority
3.8/10Threadlinqs triage score
Published
Updated 2026-07-22
CVSS v3.1 6.5 (MEDIUM) · EPSS 0.2% (higher than 14.4% of all scored CVEs) · Priority 3.8/10 · Published 2026-07-21

Last updated:

What is CVE-2026-63261?

Uncontrolled Resource Consumption (CWE-400) in Kibana can lead to denial of service via Excessive Allocation (CAPEC-130). A low-privileged authenticated user can send a specially crafted request to a Kibana machine learning feature, causing the server to exhaust available memory and become unavailable to all users.

The record classifies CVE-2026-63261 under weakness class CWE-400. Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs low-privilege credentials, needs no user interaction, and has high impact on availability. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 76 days ago.

Severity and exploitation probability

CVSS v3.1 base score
6.5 — MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS (FIRST)
0.2% probability of exploitation in the next 30 days, higher than 14.4% of all scored CVEs
CISA KEV
Not listed in the CISA Known Exploited Vulnerabilities catalog
Threadlinqs priority
3.8/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
Published
2026-07-21, last modified 2026-07-22

Is CVE-2026-63261 being exploited?

It currently carries a trending score of 33 in the Threadlinqs vulnerability feed.

Affected products and versions

How to fix CVE-2026-63261

No vendor patch reference has been recorded for CVE-2026-63261 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

Threat activity tracking CVE-2026-63261

No threat campaign in the Threadlinqs corpus currently references CVE-2026-63261, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.

Sources

Enriched from CVE.org, NVD, FIRST EPSS. Last verified by Threadlinqs on . This product uses the NVD API but is not endorsed or certified by the NVD.

Other references