CVE-2026-56152Network attack vector

Authenticated response data disclosure via missing ACL checks

Published Jul 1, 2026 · Updated Jul 1, 2026

Incorrect authorization in affected Elastic Defend releases allows remote authenticated users to read unauthorized response action data. Elastic has not disclosed the affected function or request path; its advisory states that access controls fail to constrain response action data. Exploitation requires low-privileged authentication, high-complexity conditions, and a deployment that uses Elastic Defend response actions; integrity and availability effects are not reported.

CVSS severity5.3
Medium
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Incorrect authorization in affected Elastic Defend releases allows remote authenticated users to read unauthorized response action data. Elastic has not disclosed the affected function or request path; its advisory states that access controls fail to constrain response action data. Exploitation requires low-privileged authentication, high-complexity conditions, and a deployment that uses Elastic Defend response actions; integrity and availability effects are not reported.

The record

CVE
CVE-2026-56152
Published
Jul 1, 2026
Updated
Jul 1, 2026
Vendor
Elastic
Product
Elastic Defend
Classifications
CWE-863, CAPEC-1
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 1, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 1, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=8.6.0 <=8.19.12
  2. Affected versionversion=9.0.0 <=9.2.6
  3. Affected versionversion=9.3.0 <=9.3.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Elastic · Elastic Defendversion=8.6.0 <=8.19.12; version=9.0.0 <=9.2.6; version=9.3.0 <=9.3.1

Published CVSS scores

5.3ElasticCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/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-863Incorrect Authorization
CAPEC-1Accessing Functionality Not Properly Constrained by ACLs

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo