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Fencer Vulns
high 7.5

CVE-2023-31418 json

Elasticsearch uncontrolled resource consumption

published 2023-10-26 3 y ago modified 2026-09-10 1 mo ago also BIT-elasticsearch-2023-31418 , EUVD-2023-2618 , GHSA-2cqf-6xv9-f22w

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
2.1%
EPSS 2.1% chance of exploitation in 30 days, percentile 81%
public exploits
0
none known

Summary

An issue has been identified with how Elasticsearch handled incoming requests on the HTTP layer. An unauthenticated user could force an Elasticsearch node to exit with an OutOfMemory error by sending a moderate number of malformed HTTP requests. The issue was identified by Elastic Engineering and we have no indication that the issue is known or that it is being exploited in the wild.

Patch / fix

  • maven org.elasticsearch:elasticsearch 7.17.13, 8.9.0
  • bitnami elasticsearch 7.17.13, 8.8.3
  • Elastic Elasticsearch 3.6.0, 8.8.2

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-2023-31418 updated cvss 7.5

elasticsearch: uncontrolled resource consumption

  • Red Hat JBoss Fuse Service Works 6 elasticsearch
    affected: no fix planned “Out of support scope”
  • Red Hat Quay 3 quay/quay-rhel8
    affected: no fix available
  • Red Hat Logging Subsystem for Red Hat OpenShift openshift-logging/fluentd-rhel8, openshift-logging/kibana6-rhel8, openshift-logging/elasticsearch6-rhel8
    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

Exploit prediction

2.05% chance of exploitation in the next 30 days, higher than 81% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
GitHub 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/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
maven org.elasticsearch:elasticsearch
<7.17.13
>=8.0.0, <8.9.0
7.17.13
8.9.0
bitnami elasticsearch
<7.17.13
>=8.0.0, <8.8.3
7.17.13
8.8.3

Affected products

  • Elastic Elasticsearch

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption

References

Sources

Fencer Vulns 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.