CVE-2026-49089
Allocation of Resources Without Limits or Throttling in Kibana Leading to Denial of Service
Description
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.
INFO
Published Date :
Aug. 13, 2026, 7:08 p.m.
Last Modified :
Aug. 13, 2026, 7:08 p.m.
Remotely Exploit :
Yes !
Source :
elastic
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | 271b6943-45a9-4f3a-ab4e-976f3fa05b5a |
Solution
- Implement resource limits for query processing.
- Enforce throttling on connector operations.
- Update Kibana to apply size limits.
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