CVE-2026-5374

Name: CVE-2026-5374
Creator: NVD / NIST
Published: 2026-04-07T15:17:47.307+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.8/10EPSS 0.21%

Last modified Jun 17, 2026

CVE-2026-5374 is a medium-severity vulnerability rated 5.8/10 on the CVSS scale. 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). EPSS estimates a 0.21% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

5.8/10

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

EPSS Probability

0.21%

10.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-863

Affected Software

Vendor	Product	Versions
Runzero	Runzero Platform	< 4.0.260202.0

References

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

Timeline

Published: Apr 7, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-5374?

How severe is CVE-2026-5374?

CVE-2026-5374 has a CVSS score of 5.8/10 (MEDIUM severity). The EPSS model estimates a 0.21% probability of exploitation in the next 30 days.

How do I fix CVE-2026-5374?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-5374?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST