Elastic Elasticsearch up to 9.1.4 Reindex API log file

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.6$0-$5k0.00

Summaryinfo

A vulnerability was found in Elastic Elasticsearch up to 7.17.29/8.18.7/8.19.4/9.0.7/9.1.4 and classified as problematic. The impacted element is an unknown function of the component Reindex API. Such manipulation leads to log file. This vulnerability is traded as CVE-2025-37727. Access to the local network is required for this attack to succeed. There is no exploit available.

Detailsinfo

A vulnerability was found in Elastic Elasticsearch up to 7.17.29/8.18.7/8.19.4/9.0.7/9.1.4 and classified as problematic. Affected by this issue is an unknown code of the component Reindex API. The manipulation with an unknown input leads to a log file vulnerability. Using CWE to declare the problem leads to CWE-532. Information written to log files can be of a sensitive nature and give valuable guidance to an attacker or expose sensitive user information. Impacted is confidentiality. CVE summarizes:

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

The advisory is shared for download at discuss.elastic.co. This vulnerability is handled as CVE-2025-37727 since 04/16/2025. The exploitation is known to be easy. The attack needs to be initiated within the local network. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1592.

The vulnerability scanner Nessus provides a plugin with the ID 269983 (Elasticsearch 7.0.x <= 7.17.29 / 8.0.x < 8.18.8 / 8.19.x < 8.19.5 / 9.0.x < 9.0.8 / 9.1.x < 9.1.5 (ESA-2025-18)), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Tenable (269983) and EUVD (EUVD-2025-33703). Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.6
VulDB Meta Temp Score: 4.6

VulDB Base Score: 3.5
VulDB Temp Score: 3.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 5.7
CNA Vector (elastic): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Log file
CWE: CWE-532 / CWE-200 / CWE-284
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 269983
Nessus Name: Elasticsearch 7.0.x <= 7.17.29 / 8.0.x < 8.18.8 / 8.19.x < 8.19.5 / 9.0.x < 9.0.8 / 9.1.x < 9.1.5 (ESA-2025-18)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

04/16/2025 CVE reserved
10/10/2025 +177 days Advisory disclosed
10/10/2025 +0 days VulDB entry created
10/11/2025 +0 days VulDB entry last update

Sourcesinfo

Advisory: discuss.elastic.co
Status: Confirmed

CVE: CVE-2025-37727 (🔒)
GCVE (CVE): GCVE-0-2025-37727
GCVE (VulDB): GCVE-100-327884
EUVD: 🔒

Entryinfo

Created: 10/10/2025 13:33
Updated: 10/11/2025 01:32
Changes: 10/10/2025 13:33 (62), 10/10/2025 19:18 (1), 10/11/2025 01:32 (2)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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