What is CVE-2026-5383?

CVE-2026-5383 is a medium-severity vulnerability in Runzero Explorer, classified under Incorrect Authorization. CVSS score: 4.4/10. Published 2026-04-07.

How severe is CVE-2026-5383?

Medium severity. CVSS v3 base score is 4.4 out of 10.

Auth bypass in Runzero Explorer

CVE-2026-5383

An issue that could allow access to Explorer groups 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…

Vulnerability class: Broken Access Control

EPSS: 0.001 (19.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:L/A:L.

Affected products

Runzero Explorer — versions 0

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

help.runzero.com/docs/release-notes/ (release-notes)
www.runzero.com/advisories/runzero-explorer-cve-2026-5383/ (vendor-advisory)

Frequently asked questions

What is CVE-2026-5383?: CVE-2026-5383 is a medium-severity vulnerability in Runzero Explorer, classified under Incorrect Authorization. CVSS score: 4.4/10. Published 2026-04-07.
How severe is CVE-2026-5383?: Medium severity. CVSS v3 base score is 4.4 out of 10.