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Fencer Vulns
medium 6.5

CVE-2018-17244 json

Exposure of Sensitive Information to an Unauthorized Actor in Elasticsearch

published 2018-12-20 7 y ago modified 2026-06-17 4 mo ago also GHSA-vpqm-88c4-x4cv , EUVD-2022-5398

cvss
6.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.5%
EPSS 1.5% chance of exploitation in 30 days, percentile 73%
public exploits
0
none known

Summary

Elasticsearch Security versions 6.4.0 to 6.4.2 contain an error in the way request headers are applied to requests when using the Active Directory, LDAP, Native, or File realms. A request may receive headers intended for another request if the same username is being authenticated concurrently; when used with run as, this can result in the request running as the incorrect user. This could allow a user to access information that they should not have access to.

Patch / fix

  • maven org.elasticsearch:elasticsearch 6.4.3

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-2018-17244 updated cvss 6.5

elasticsearch: Information Exposure due to improper set request headers

  • Red Hat JBoss Fuse 6 elasticsearch
    affected: no fix planned “Out of support scope”
  • Red Hat Decision Manager 7 elasticsearch Red Hat Fuse 7 elasticsearch Red Hat OpenShift Container Platform 3.2 elasticsearch Red Hat OpenShift Container Platform 3.3 elasticsearch Red Hat OpenShift Container Platform 3.4 elasticsearch Red Hat OpenShift Container Platform 3.5 elasticsearch
    +11 more products
    Red Hat OpenShift Container Platform 3.6 elasticsearch Red Hat OpenShift Container Platform 3.7 elasticsearch Red Hat OpenShift Container Platform 3.9 elasticsearch Red Hat OpenShift Container Platform 3.10 elasticsearch Red Hat OpenShift Container Platform 3.11 elasticsearch Red Hat OpenShift Enterprise 3.0 elasticsearch Red Hat OpenShift Enterprise 3.1 elasticsearch Red Hat OpenStack Platform 8 (Liberty) Operational Tools elasticsearch Red Hat OpenStack Platform 9 (Mitaka) Operational Tools elasticsearch Red Hat Process Automation 7 elasticsearch Red Hat Subscription Asset Manager elasticsearch
    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

1.46% chance of exploitation in the next 30 days, higher than 73% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 6.5 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 4.0 AV:N/AC:L/Au:S/C:P/I:N/A:N
GitHub 3.0 6.5 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Affected packages

ecosystem package affected fixed in
maven org.elasticsearch:elasticsearch
>=6.4.0, <6.4.3
6.4.3

Affected products

  • Elastic Elasticsearch

Classification

Weakness
  • CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

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.