Vulnerability · Published Apr 7, 2026 · Assigned by runZero

CVE-2026-5374runZero Platform MCP information leak

Medium 5.8

In plain English

A medium-severity incorrect authorization in Platform from runZero. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 12% of all known vulnerabilities).

Severity (CVSS 3.1)5.8Medium

Exploit odds (30 days)0.2%top 87.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
runZero	Platform	0 – before 4.0.260202.0

Weakness: CWE-863 · Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N

References

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