CVE-2026-78153: CWE-863 Incorrect Authorization in Restrict User Access
Description
The Restrict User Access WordPress plugin before 2.8.1 does not normalise the REST API route before checking it against the routes its content protection covers, allowing unauthenticated users to bypass that protection and read restricted content and enumerate users.
CVSS v3.1
Score 5.3medium
Affected software
Restrict User Access
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-78153 affects the Restrict User Access WordPress plugin before version 2.8.1. The vulnerability arises because the plugin fails to normalize REST API routes before verifying if they are protected. This improper authorization check allows unauthenticated attackers to bypass content restrictions, potentially exposing restricted content and user enumeration. The issue is categorized under CWE-863 (Incorrect Authorization). There is no vendor advisory or patch currently available to address this issue.
Potential Impact
Unauthenticated attackers can bypass the plugin's content protection mechanisms, allowing them to access restricted content and enumerate users. This could lead to information disclosure but does not impact integrity or availability according to the CVSS vector.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is released, consider restricting access to the REST API endpoints or applying additional access controls at the server or application level to mitigate unauthorized access.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WPScan
- Date Reserved
- 2026-08-23T06:59:08.195Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a983138acd9273b49556a9c
Added to database: 09/02/2026, 14:22:48 UTC
Last enriched: 09/07/2026, 13:52:52 UTC
Last updated: 10/17/2026, 06:48:20 UTC
Views: 50
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