Medium 4.4Published Apr 7, 2026

CVE-2026-5383runZero Explorer missing authorization check

Updated under an hour ago (Oct 27, 2026, 5:23 PM ET)

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It affects runZero Explorer and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for runZero Explorer

Exploited in the last 30 days

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:N/S:C/C:N/I:L/A:L (4.4 Medium). This issue was fixed in version 4.0.260208.0 of the runZero Explorer.

CVSS: 4.4 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:L/A:L
Weakness (CWE): CWE-863
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: runZero
NVD analysis: Analyzed
Record last updated: Apr 7, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

runZero Explorer runzero:explorer (from the name)	before 4.0.260208.0	CNA record
runzero runzero_platform runzero:runzero_platform	before 4.0.260208.0	NVD

References

References

https://help.runzero.com/docs/release-notes/#402602080	release-notes
https://www.runzero.com/advisories/runzero-explorer-cve-2026-5383/	vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.