CVE-2026-13154: CWE-200 Information Exposure in Gutenberg Essential Blocks
The Gutenberg Essential Blocks WordPress plugin before 6.4.0 does not verify that an attacker-supplied post type is publicly viewable before querying it in one of its public REST routes, allowing unauthenticated users to read published entries of custom post types that the site registered as non-public.
AI Analysis
Technical Summary
The Gutenberg Essential Blocks WordPress plugin versions prior to 6.4.0 do not properly validate the visibility of post types in one of their public REST API routes. Specifically, the plugin does not check if the post type supplied by an unauthenticated user is publicly viewable before querying it. As a result, attackers can read published entries of custom post types that the site has registered as non-public, leading to unintended information disclosure.
Potential Impact
Unauthenticated attackers can access published content of custom post types that are intended to be non-public. This exposure could lead to leakage of sensitive or restricted information that site administrators expected to keep hidden from public access.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, site administrators should consider restricting access to the REST API endpoints or disabling the Gutenberg Essential Blocks plugin if the exposure of custom post types is a concern.
CVE-2026-13154: CWE-200 Information Exposure in Gutenberg Essential Blocks
Description
The Gutenberg Essential Blocks WordPress plugin before 6.4.0 does not verify that an attacker-supplied post type is publicly viewable before querying it in one of its public REST routes, allowing unauthenticated users to read published entries of custom post types that the site registered as non-public.
CVSS v3.1
Score 7.5high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Gutenberg Essential Blocks WordPress plugin versions prior to 6.4.0 do not properly validate the visibility of post types in one of their public REST API routes. Specifically, the plugin does not check if the post type supplied by an unauthenticated user is publicly viewable before querying it. As a result, attackers can read published entries of custom post types that the site has registered as non-public, leading to unintended information disclosure.
Potential Impact
Unauthenticated attackers can access published content of custom post types that are intended to be non-public. This exposure could lead to leakage of sensitive or restricted information that site administrators expected to keep hidden from public access.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, site administrators should consider restricting access to the REST API endpoints or disabling the Gutenberg Essential Blocks plugin if the exposure of custom post types is a concern.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WPScan
- Date Reserved
- 2026-06-24T11:20:17.620Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a742932bf8831d53945d6ab
Added to database: 08/06/2026, 06:26:58 UTC
Last enriched: 08/06/2026, 07:00:49 UTC
Last updated: 08/07/2026, 01:20:40 UTC
Views: 8
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