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CVE-2025-37727

Good to know:

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Date: October 10, 2025

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

Severity Score

Related Resources (6)

https://discuss.elastic.co/t/elasticsearch-8-18-8-8-19-5-9-0-8-9-1-5-security-update-esa-2025-18/382453
https://www.elastic.co/guide/en/elasticsearch/reference/8.18/release-notes-8.18.8.html
https://github.com/elastic/elasticsearch
https://nvd.nist.gov/vuln/detail/CVE-2025-37727
https://github.com/elastic/elasticsearch/commit/e982eef416a5e1c2a4e94236d7d3b33b5c8d07db
https://www.mend.io/vulnerability-database/CVE-2025-37727

Severity Score

Weakness Type (CWE)

Insertion of Sensitive Information into Log File

CWE-532

Top Fix

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Upgrade Version

Upgrade to version org.elasticsearch:elasticsearch:8.18.8;org.elasticsearch:elasticsearch:8.19.5;org.elasticsearch:elasticsearch:9.0.8;org.elasticsearch:elasticsearch:9.1.5

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CVSS v3.1

Base Score:
Attack Vector (AV): ADJACENT_NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): NONE
Availability (A): NONE

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