CVE-2025-13653Network attack vector

Authenticated document disclosure via authorization bypass

Published Dec 1, 2025 · Updated Dec 1, 2025

Incorrect authorization in floragunn Search Guard FLX 3.1.0 through 4.0.0 allows remote authenticated users to read data-stream documents. With enterprise modules disabled, specially crafted data-stream requests bypass document-read privilege enforcement; floragunn has not disclosed the affected code path or request form. Any authenticated account can read otherwise unauthorized documents, but the published impact is limited to confidentiality.

CVSS severity4.3
Medium
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in floragunn Search Guard FLX 3.1.0 through 4.0.0 allows remote authenticated users to read data-stream documents. With enterprise modules disabled, specially crafted data-stream requests bypass document-read privilege enforcement; floragunn has not disclosed the affected code path or request form. Any authenticated account can read otherwise unauthorized documents, but the published impact is limited to confidentiality.

The record

CVE
CVE-2025-13653
Published
Dec 1, 2025
Updated
Dec 1, 2025
Vendor
floragunn GmbH
Product
Search Guard FLX
Classifications
CWE-200, CWE-863, T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 1, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 1, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.1.0 <=4.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

floragunn GmbH · Search Guard FLXversion=3.1.0 <=4.0.0

Published CVSS scores

4.3floragunnCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
CWE-863Incorrect Authorization
T1213Data from Information Repositories

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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