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Platform EUVDEUVD-2026-19699

| CVE-2026-5382 LOW
Incorrect Authorization (CWE-863)
2026-04-07 runZero GHSA-69vg-gq6x-ppc2
3.0
CVSS 3.1 · Vendor: runZero
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Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Authorization logic validation
MITRE ATT&CK

1 technique across 1 tactic: Privilege Escalation

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Impact

While the CVSS score of 3.0 (Low) reflects the impact constraints-high privilege requirement (PR:H), high attack complexity (AC:H), limited confidentiality impact (C:L), no integrity or availability impact-the real-world risk hinges on organizational deployment context. The requirement for high-privilege credentials significantly limits the threat surface; however, insider threats from administrative users with legitimate platform access represent a credible attack vector. The authentication requirement (PR:H per CVSS vector) reduces likelihood of external exploitation substantially. No EPSS probability data, active exploitation evidence (KEV status not provided), or public proof-of-concept is available, indicating low immediate prioritization. Organizations managing multi-tenant or heavily compartmentalized environments should assess their administrative access governance and monitor for unauthorized record access patterns. This is best characterized as a privilege-boundary-enforcement issue rather than a critical threat.

Exploit ScenarioDerived

A high-privilege administrator with legitimate access to runZero Platform's management console could intentionally or inadvertently query MCP endpoints to retrieve asset records, vulnerability data, or configuration information belonging to other organizations within the same platform instance. Due to the high attack complexity (AC:H) and privilege requirement, exploitation requires either deliberate abuse by an insider or a sophisticated social engineering scenario convincing an administrator to execute specific MCP queries. No public exploit code exists to automate this action, limiting the attack surface to knowledgeable internal users or threat actors with compromised administrative credentials.

Monitor Track and reassess. Why: LOW severity (CVSS 0.1-3.9).
Patch available 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Apr 07, 2026

Incorrect authorization in runZero Platform MCP endpoints allows authenticated high-privilege users to access records outside their authorized organization scope, exposing sensitive data across organizational boundaries. The vulnerability affects runZero Platform versions prior to 4.0.260206.0 and requires high-privilege credentials to exploit, resulting in limited confidentiality impact. No public exploit code or active exploitation has been identified.

RemediationAI

Organizations should immediately upgrade to runZero Platform version 4.0.260206.0 or later, which includes the fix for the MCP endpoint authorization controls. Until patching is completed, restrict high-privilege administrative access to only personnel requiring MCP endpoint interaction, and implement network segmentation to limit unauthorized administrative sessions if deployment architecture permits. Verify remediation by testing cross-organization record access attempts with high-privilege credentials. Consult the runZero release notes (https://help.runzero.com/docs/release-notes/#402602060) and advisory (https://www.runzero.com/advisories/runzero-platform-mcp-infoleak-cve-2026-5382/) for additional deployment guidance.

Affected VersionsENISA

platform 0 <4.0.260206.0

Affected Packages

euvd platform fix: 4.0.260206.0

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The vulnerability is rooted in CWE-863 (Incorrect Authorization), a class of flaw where access control mechanisms fail to properly enforce organizational boundaries. The MCP (Management Control Plane) endpoints in runZero Platform lack sufficient authorization checks to validate that requesting users are restricted to their assigned organization scope. This allows privilege escalation within the application's authorization model, where high-privilege users can bypass organization isolation controls to query and retrieve records belonging to other organizations, even though no actual privilege elevation occurs at the user account level. The issue manifests through the platform's API/endpoint layer rather than in underlying authentication mechanisms.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (runZero) PRIMARY 3.0 LOW
AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:N/A:N

Primary rating from Vendor (runZero) · only source for this CVE.

CVSS VectorVendor: runZero

Attack Vector
Network
Attack Complexity
High
Privileges Required
High
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
None
Availability
None

Lifecycle Timeline

2
Patch available
Apr 16, 2026 - 05:29 EUVD
4.0.260206.0
CVE Published
Apr 07, 2026 - 14:12 nvd
LOW 3.0

DescriptionCVE.org

An issue that could expose records outside of the authorized organization scope through the MCP endpoints has been resolved. This is an instance of CWE-863: Incorrect Authorization, and has an estimated CVSS score of CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:N/A:N (3.0 Low). This issue was fixed in version 4.0.260206.0 of the runZero Platform.

Threat Intelligence Overview

EPSS Score
0.0%
Top 94% exploitable
Data Quality
5 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity LOW
CISA KEV No
Public POC No
EPSS 0.0%
Patch available Yes
Active threat No
Deciding rule
LOW severity (CVSS 0.1-3.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Defer
Exploitation
None
System Exposure· derived
Open
Automatable
No
Human Impact· derived
Low
Technical Impact
Partial

Priority Score

15
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +15
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

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