CVE-2026-86783 - Vulnerability Details - OpenCVE

The Post Grid Gutenberg Blocks WordPress plugin before 5.0.41 does not perform an authorization or post-visibility check on a REST API route that returns the custom field keys of a given post, allowing unauthenticated users to disclose the custom field key names of arbitrary posts, including private, draft, pending, scheduled and password-protected posts.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact Low

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00199.

Exploitation none

Automatable yes

Technical Impact partial

No data.

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OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://wpscan.com/vulnerability/719fc130-748b-4bad-8091-2858664299ed/

History

Wed, 23 Sep 2026 11:45:00 +0000

Type	Values Removed	Values Added
Description		The Post Grid Gutenberg Blocks WordPress plugin before 5.0.41 does not perform an authorization or post-visibility check on a REST API route that returns the custom field keys of a given post, allowing unauthenticated users to disclose the custom field key names of arbitrary posts, including private, draft, pending, scheduled and password-protected posts.
Title		PostX < 5.0.41 - Unauthenticated Custom Field Key Disclosure via REST API
Weaknesses		CWE-200
References		https://wpscan.com/vulnerability/719fc130-748b-4bad-8091-2858664299ed/
Metrics		cvssV3_1 `{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'}` ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Projects

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MITRE

Status: PUBLISHED

Assigner: WPScan

Published: 2026-09-23T06:00:19.511Z

Updated: 2026-09-23T10:55:10.369Z

Reserved: 2026-09-08T11:48:34.198Z

Link: CVE-2026-86783

Vulnrichment

Updated: 2026-09-23T10:35:19.999Z

NVD

Status : Received

Published: 2026-09-23T06:17:04.130

Modified: 2026-09-23T11:17:14.857

Link: CVE-2026-86783

Redhat

No data.

OpenCVE Enrichment

Updated: 2026-09-23T14:30:06Z

Weaknesses

CWE-200

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