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Fencer Vulns
medium 5.7

CVE-2025-37727 json

Elasticsearch Insertion of sensitive information in log file

published 2025-10-10 12 mo ago modified 2026-10-08 31 d ago also BIT-elasticsearch-2025-37727 , EUVD-2025-33703 , GHSA-56r7-h6mw-rcfv

cvss
5.7
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 16%
public exploits
0
none known

Summary

Insertion of sensitive information in log file in Elasticsearch can lead to loss of confidentiality under specific preconditions when auditing requests to the reindex API https://www.elastic.co/docs/api/doc/elasticsearch/operation/operation-reindex

Patch / fix

  • maven org.elasticsearch.plugin:reindex-client 8.18.8, 8.19.5, 9.0.8, 9.1.5
  • bitnami elasticsearch 8.18.8, 8.19.5, 9.0.8, 9.1.5
  • elastic elasticsearch 8.18.8, 8.19.5, 9.0.8, 9.1.5
  • elasticsearch elasticsearch 8.18.8, 8.19.5, 9.0.8, 9.1.5
  • org.elasticsearch elasticsearch 8.18.8, 8.19.5, 9.0.8, 9.1.5

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-2025-37727 updated cvss 5.7

org.elasticsearch/elasticsearch-core: Elasticsearch Insertion of sensitive information in log file

  • Red Hat Logging Subsystem for Red Hat OpenShift elasticsearch-core, openshift-logging/kibana6-rhel8, openshift-logging/elasticsearch6-rhel9, openshift-logging/logging-curator5-rhel9, openshift-logging/elasticsearch-proxy-rhel9, openshift-logging/elasticsearch-rhel9-operator, +1 more Red Hat Fuse 7 elasticsearch-core Red Hat JBoss Enterprise Application Platform 7 elasticsearch-core Red Hat JBoss Enterprise Application Platform 8 elasticsearch-core Red Hat JBoss Enterprise Application Platform Expansion Pack elasticsearch-core
    affected: workaround, no fix available “Fix deferred”

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
12 mo ago

Exploit prediction

0.25% chance of exploitation in the next 30 days, higher than 16% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 5.7 CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
GitHub 3.1 5.7 CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
OSV 3.1 5.7 CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Affected packages

ecosystem package affected fixed in
maven org.elasticsearch.plugin:reindex-client
>=7.0.0, <8.18.8
>=8.19.0, <8.19.5
>=9.0.0-beta1, <9.0.8
>=9.1.0, <9.1.5
8.18.8
8.19.5
9.0.8
9.1.5
bitnami elasticsearch
<8.18.8
>=8.19.0, <8.19.5
>=9.0.0, <9.0.8
>=9.1.0, <9.1.5
8.18.8
8.19.5
9.0.8
9.1.5

Affected products

  • Elastic Elasticsearch

Classification

Weakness
  • CWE-532 Insertion of Sensitive Information into Log File

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.

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