CVE-2025-37727 | Elasticsearch Insertion of sensitive information in log file

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

Published: 2025-10-10 Last update: 2025-12-23 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-37727 is rated Low Risk (24/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.02%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2025-37727

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-10-10 — 0.02% —

Full EPSS history (1 record total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-37727

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.7 3.1 MEDIUM
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Click to expand
Attack vector (AV:A)
Attacker has to be nearby on the network—same office, same link, that vibe—not the whole wide internet.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 2.1 3.6 [email protected]

Weakness enumeration for CVE-2025-37727

GitHub Security Advisory for CVE-2025-37727

GHSA-56r7-h6mw-rcfv · Severity: medium · Ecosystem: maven — Elasticsearch: Insertion of Sensitive Information into Log File via reindex API

OS Trackers for CVE-2025-37727

vendor priority summary link
redhat medium — https://access.redhat.com/security/cve/CVE-2025-37727
ubuntu medium CVE-2025-37727 medium priority: Ubuntu including 1 source packages (elasticsearch), 6 status rows across 6 suites (jammy, noble, plucky, questing, upstream, xenial): DNE 4, needs-triage 2. https://ubuntu.com/security/CVE-2025-37727

Affected software / configurations for CVE-2025-37727

Vendor Product Version Raw CPE
elastic elasticsearch >= 7.0.0, <= 7.17.29 cpe:2.3:a:elastic:elasticsearch:*:*:*:*:*:*:*:*
elastic elasticsearch >= 8.0.0, < 8.18.8 cpe:2.3:a:elastic:elasticsearch:*:*:*:*:*:*:*:*
elastic elasticsearch >= 8.19.0, < 8.19.5 cpe:2.3:a:elastic:elasticsearch:*:*:*:*:*:*:*:*
elastic elasticsearch >= 9.0.0, < 9.0.8 cpe:2.3:a:elastic:elasticsearch:*:*:*:*:*:*:*:*
elastic elasticsearch >= 9.1.0, < 9.1.5 cpe:2.3:a:elastic:elasticsearch:*:*:*:*:*:*:*:*

References for CVE-2025-37727

cvelogic Threat Intelligence