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Fencer Intel
medium 6.5

CVE-2026-26937 json

Uncontrolled Resource Consumption in Kibana Leading to Denial of Service

published 8mo ago modified 2mo ago also BIT-elk-2026-26937 , BIT-kibana-2026-26937 , EUVD-2026-8872

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 25%
public exploits
0
none known

Summary

Uncontrolled Resource Consumption (CWE-400) in the Timelion component in Kibana can lead Denial of Service via Input Data Manipulation (CAPEC-153)

Patch / fix

  • bitnami elk 8.19.11, 9.2.5
  • bitnami kibana 8.19.11, 9.2.5
  • elastic kibana 8.19.11, 9.2.5
  • elasticsearch kibana 8.19.11, 9.2.5

Is CVE-2026-26937 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
8mo ago

Exploit prediction

0.32% chance of exploitation in the next 30 days, higher than 25% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
OSV 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
bitnami elk
>=8.0.0, <8.19.11
>=9.0.0, <9.2.5
8.19.11
9.2.5
bitnami kibana
>=8.0.0, <8.19.11
>=9.0.0, <9.2.5
8.19.11
9.2.5

Affected products

  • Elastic Kibana

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.