What is CVE-2026-86782?

CVE-2026-86782 is a medium-severity vulnerability in Visualizer, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 5.5/10. Published 2026-09-11.

How severe is CVE-2026-86782?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Auth bypass in Visualizer

CVE-2026-86782

The Visualizer WordPress plugin before 4.0.6 does not properly authorise access to its chart-building actions, allowing users with the Contributor role and above to publish, rename, and overwrite the content of posts and pages they do not own, including other users' private drafts.

Vulnerability class: IDOR (Insecure Direct Object Reference)

Published 2026-09-11 · last modified 2026-09-11.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:N.

EPSS exploit prediction

EPSS: 0.003 (23.3th percentile), scored 2026-10-26.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 23rd percentile — 23.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Visualizer

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

References

wpscan.com/vulnerability/ad9909b8-c302-4cb5-bbe7-bff89c64b6ce/ (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-86782?: CVE-2026-86782 is a medium-severity vulnerability in Visualizer, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 5.5/10. Published 2026-09-11.
How severe is CVE-2026-86782?: Medium severity. CVSS v3 base score is 5.5 out of 10.