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Fencer Intel
medium 6.5

CVE-2026-94397 json

Uncontrolled Resource Consumption in Elasticsearch Leading to denial of service

published last mo. modified last mo. also BIT-elasticsearch-2026-94397 , EUVD-2026-87801

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 15%
public exploits
0
none known

Summary

Uncontrolled Resource Consumption (CWE-400) in Elasticsearch can lead denial of service via Excessive Allocation (CAPEC-130)

Patch / fix

  • bitnami elasticsearch 8.19.22, 9.4.7, 9.5.4
  • elastic elasticsearch 8.19.22, 9.4.7, 9.5.4
  • elasticsearch elasticsearch 8.19.22, 9.4.7, 9.5.4
  • org.elasticsearch elasticsearch 8.19.22, 9.4.7, 9.5.4

Is CVE-2026-94397 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.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-94397 updated cvss 6.5

elasticsearch: Uncontrolled Resource Consumption in Elasticsearch Leading to denial of service

  • Red Hat OpenShift AI (RHOAI) rhoai/odh-feature-server-rhel9
    affected: workaround, no fix available “Fix deferred”
  • Red Hat Quay 3 quay/quay-rhel8, quay/quay-rhel9
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
last mo.

Exploit prediction

0.24% chance of exploitation in the next 30 days, higher than 15% of all scored CVEs (FIRST EPSS, 2026-11-11).

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
OSV 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
bitnami elasticsearch
>=8.0.0, <8.19.22
>=9.0.0, <9.4.7
>=9.5.0, <9.5.4
8.19.22
9.4.7
9.5.4

Affected products

  • Elastic Elasticsearch

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.