CVE-2026-49089

EUVD-2026-58244

13.08.2026, 20:17

Allocation of Resources Without Limits or Throttling (CWE-770) in Kibana can lead to denial of service via Excessive Allocation (CAPEC-130). A query expression accepted by a connector reporting operation was processed without any limit on its size, and an oversized expression caused the Kibana process to spend an unbounded amount of time evaluating it. An authenticated user with read-only privileges was able to send a single request that left Kibana unable to serve any user until the process was restarted.

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	Primary	6.5 MEDIUM	NETWORK	LOW	LOW	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Base Score

CVSS 3.x

EPSS Score

Percentile: 38.32%

Affected Products (NVD)

Vendor	Product	Version
elastic	kibana	8.0.0 ≤ 𝑥 < 8.19.20
elastic	kibana	9.0.0 ≤ 𝑥 < 9.4.5

𝑥

= Vulnerable software versions

Common Weakness Enumeration

CWE-770 - Allocation of Resources Without Limits or Throttling
The software allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor.

References

https://discuss.elastic.co/t/kibana-8-19-20-9-4-5-security-update-esa-2026-137/389511