What is CVE-2026-18364?

CVE-2026-18364 is a medium-severity vulnerability in Zportals, classified under Missing Authorization. CVSS score: 4.3/10. Published 2026-09-23.

How severe is CVE-2026-18364?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Auth bypass in Zportals

CVE-2026-18364

The zportals WordPress plugin before 6.4.2 does not perform any capability or nonce check on several of its AJAX actions, allowing users with a subscriber-level account to modify the zportals WordPress plugin before 6.4.2's stored integration settings.

Vulnerability class: Broken Access Control

Published 2026-09-23 · last modified 2026-09-23.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.002 (7.9th percentile), scored 2026-09-24.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 8th percentile — 7.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

The 30-day trend appears once there are two daily scores.

Affected products

Zportals

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

wpscan.com/vulnerability/f1b6d694-e55a-42a8-8308-48ec158b26a5/ (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-18364?: CVE-2026-18364 is a medium-severity vulnerability in Zportals, classified under Missing Authorization. CVSS score: 4.3/10. Published 2026-09-23.
How severe is CVE-2026-18364?: Medium severity. CVSS v3 base score is 4.3 out of 10.