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CVE-2026-5379

runZero Platform MCP certification information leak

Published: Apr 7, 2026Updated: Apr 21, 2026 Sources: CVE List NVDCWE-863
NVD MITRE
3.0CVSSLOW
EPSS Score
0.1%
Top 98.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

An issue that allowed MCP agents to access certificate information from outside of their authorized organization scope 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 4.0.260203.0 of the runZero Platform.

CVSS Vector Breakdown

AV:NAC:HPR:HUI:NS:CC:LI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:HPrivileges Required
High
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:LConfidentiality
Low
I:NIntegrity
None
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-863

Affected Products

runzero platformrunzero
SaaS
Security Products / vuln-mgmt-scanner
PlatformrunZero
SaaS
Security Products / vuln-mgmt-scanner
runzerocommercialSecurity Productsaka runzero platform

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Initial Access
View detailed technique mapping

References

https://help.runzero.com/docs/release-notes/#402602030
help.runzero.com
https://www.runzero.com/advisories/runzero-platform-mcp-cert-infoleak-cve-2026-5379/
runzero.com

Timeline

Published
Apr 7, 2026
Last Updated
Apr 21, 2026

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