CVE-2026-5374

runZero Platform MCP information leak

CVSS 5.8 MEDIUMEPSS 0.2%CWE-863

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 5.8EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado

Lifecycle

07 Apr 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

An issue that allowed MCP agents to access remediation and asset information from outside of the 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:H/I:N/A:N (5.8 Medium). This issue was fixed in version 4.0.260202.0 of the runZero Platform.

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N

Affected products

runZero · Platform

Want to know if your infrastructure is exposed to this?

Talk to TrueHacking →

References

https://help.runzero.com/docs/release-notes/#402602020 https://www.runzero.com/advisories/runzero-platform-mcp-infoleak-cve-2026-5374/