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CVE

CVE-2025-37727

Insertion of sensitive information in log file in Elasticsearch can lead to loss of confidentiality under specific preco

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.

MEDIUM · CVSS 5.7 EPSS 0.00019
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-532Insertion of Sensitive Information into Log File
▤

Affected Products & Versions

5
elastic elasticsearch>= 7.0.0 and <= 7.17.29
elastic elasticsearch>= 8.0.0 and < 8.18.8
elastic elasticsearch>= 8.19.0 and < 8.19.5
elastic elasticsearch>= 9.0.0 and < 9.0.8
elastic elasticsearch>= 9.1.0 and < 9.1.5
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
Maven org.elasticsearch:elasticsearch MODERATE fixed in 8.18.8
▣

Scoring & Timeline

5.7
MEDIUM · CVSS v3.1 · security@elastic.co
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD10 Oct 2025 · 10:15 AM
CVSS VectorCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

1
msrcCVE-2025-37727
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://discuss.elastic.co/t/elasticsearch-8-18-8-8-19-5-9-0-8-9-1-5-security-update-esa-2025-18/382453Vendor Advisory
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