What is CVE-2026-5378?

CVE-2026-5378 is a medium-severity vulnerability in Runzero Platform, classified under Incorrect Authorization. CVSS score: 5.8/10. Published 2026-04-07.

How severe is CVE-2026-5378?

Medium severity. CVSS v3 base score is 5.8 out of 10.

Auth bypass in Runzero Platform

CVE-2026-5378

An issue that allowed administrators to create and update users 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…

Vulnerability class: Broken Access Control

EPSS: 0.000 (14.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:N.

Affected products

Runzero Platform — versions 0

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

help.runzero.com/docs/release-notes/ (release-notes)
www.runzero.com/advisories/runzero-platform-user-creation-leak-cve-2026-5378/ (vendor-advisory)

Frequently asked questions

What is CVE-2026-5378?: CVE-2026-5378 is a medium-severity vulnerability in Runzero Platform, classified under Incorrect Authorization. CVSS score: 5.8/10. Published 2026-04-07.
How severe is CVE-2026-5378?: Medium severity. CVSS v3 base score is 5.8 out of 10.