CVE-2026-86782
Received Received - Intake

Unauthorised Post Modification in Visualizer WordPress Plugin

Publication date: 2026-09-11

Last updated on: 2026-09-11

Assigner: WPScan

Description
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.

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Meta Information

Published
2026-09-11
Last Modified
2026-09-11
Generated
2026-10-01
AI Q&A
2026-09-11
EPSS Evaluated
2026-09-29
NVD
CVE-2026-86782
EUVD
EUVD-2026-75971

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
visualizer visualizer to 4.0.6 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-639 The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.

Attack-Flow Graph

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Executive Summary

This vulnerability is an Insecure Direct Object Reference (IDOR) flaw in the Visualizer WordPress plugin before version 4.0.6. It allows users with the Contributor role or higher to modify posts and pages they do not own, including publishing, renaming, overwriting content, and accessing private drafts of other users.

Detection Guidance

Check the installed version of the Visualizer plugin in WordPress. If it is below 4.0.6, the system is vulnerable. Use WordPress admin panel or run SQL query on the database to verify the plugin version.

Impact Analysis

An attacker with Contributor access or higher could alter or delete content they don't own, including private drafts. This could lead to data loss, unauthorized changes to published content, or exposure of sensitive information in drafts.

Compliance Impact

This vulnerability could lead to unauthorized access and modification of sensitive data, potentially violating GDPR (data integrity and confidentiality) and HIPAA (protected health information integrity). Organizations using affected versions may face compliance violations and legal consequences.

Mitigation Strategies

Update the Visualizer plugin to version 4.0.6 or later immediately. If updating is not possible, consider disabling the plugin temporarily until an update is applied.

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