CVE-2026-5374Network attack vector

Cross-organization information disclosure via unchecked MCP scope

Published Apr 7, 2026 · Updated Apr 7, 2026

Incorrect authorization in runZero Platform before 4.0.260202.0 allows remote authenticated users to read other organizations' asset data. MCP agent requests fail to enforce the authorized organization scope when retrieving remediation and asset information. An MCP agent associated with a highly privileged account is required; exposure is limited to confidential asset and remediation details, and the affected handler is undisclosed.

CVSS severity5.8
Medium
EPSS probability0.21%
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 runZero Platform before 4.0.260202.0 allows remote authenticated users to read other organizations' asset data. MCP agent requests fail to enforce the authorized organization scope when retrieving remediation and asset information. An MCP agent associated with a highly privileged account is required; exposure is limited to confidential asset and remediation details, and the affected handler is undisclosed.

The record

CVE
CVE-2026-5374
Published
Apr 7, 2026
Updated
Apr 7, 2026
Vendor
runZero
Product
runZero Platform
Classifications
CWE-863, T1213
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Apr 7, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 7, 2026Record 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=0 <4.0.260202.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

runZero · runZero Platformversion=0 <4.0.260202.0

Published CVSS scores

5.8runZeroCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/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.

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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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-863Incorrect Authorization
T1213Data from Information Repositories

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

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Your stack

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