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CVE-2025-37727

Elasticsearch Insertion of sensitive information in log file

MEDIUM
5.7
CVSS Score
Published: October 10, 2025 at 09:56 AM UTC
Updated: October 8, 2026 at 01:10 PM UTC
1 product affected across 1 vendorElasticsearch

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Severity
MEDIUM5.7
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

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

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Elasticsearch· Elasticelastic-plugin
95%
7.0.0 ≤ v ≤ 7.17.298.0.0 ≤ v ≤ 8.18.78.0.0 ≤ v < 8.18.88.19.0 ≤ v ≤ 8.19.48.19.0 ≤ v < 8.19.59.0.0 ≤ v ≤ 9.0.79.0.0 ≤ v < 9.0.89.1.0 ≤ v ≤ 9.1.49.1.0 ≤ v < 9.1.5*7.0.08.0.08.19.09.0.09.1.0
Affected range stops below 8.18.8, so it looks safe — our inference, not a vendor statement
Affected range stops below 8.19.5, so it looks safe — our inference, not a vendor statement
Affected range stops below 9.0.8, so it looks safe — our inference, not a vendor statement
Affected range stops below 9.1.5, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

Vendor Advisory
Source: cverecord
https://discuss.elastic.co/t/elasticsearch-8-18-8-8-19-5-9-0-8-9-1-5-security-update-esa-2025-18/382453

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.7MEDIUMelastic
Attack Vector
ADJACENT_NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-532

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