The Helpfulcrowd Product Reviews plugin for WordPress is vulnerable to Authorization Bypass via PHP Type Juggling in versions up to, and including, 1.2.9. This is due to the `helpfulcrowd_validate_token()` function using a loose comparison operator (`!=`) instead of a strict comparison (`!==`) when validating the `token` parameter, while the corresponding REST route `/wp-json/helpfulcrowd/v1/update-settings` is registered with a `permission_callback` of `__return_true`, making it reachable by unauthenticated users; submitting a JSON boolean `true` as the `token` value causes PHP's loose comparison to evaluate as equal to the non-empty base64-encoded secret string, bypassing the check entirely. This makes it possible for unauthenticated attackers to invoke `helpfulcrowd_settings_endpoint()` and write arbitrary attacker-controlled key-value pairs directly into the `helpfulcrowd_options` WordPress database option via `update_option()` without any sanitization or allowlist filtering, enabling full unauthenticated modification of the plugin's stored configuration.

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History

Tue, 09 Jun 2026 09:15:00 +0000

Type Values Removed Values Added
First Time appeared Helpfulcrowd
Helpfulcrowd helpfulcrowd Product Reviews
Wordpress
Wordpress wordpress
Vendors & Products Helpfulcrowd
Helpfulcrowd helpfulcrowd Product Reviews
Wordpress
Wordpress wordpress

Tue, 09 Jun 2026 04:45:00 +0000

Type Values Removed Values Added
Description The Helpfulcrowd Product Reviews plugin for WordPress is vulnerable to Authorization Bypass via PHP Type Juggling in versions up to, and including, 1.2.9. This is due to the `helpfulcrowd_validate_token()` function using a loose comparison operator (`!=`) instead of a strict comparison (`!==`) when validating the `token` parameter, while the corresponding REST route `/wp-json/helpfulcrowd/v1/update-settings` is registered with a `permission_callback` of `__return_true`, making it reachable by unauthenticated users; submitting a JSON boolean `true` as the `token` value causes PHP's loose comparison to evaluate as equal to the non-empty base64-encoded secret string, bypassing the check entirely. This makes it possible for unauthenticated attackers to invoke `helpfulcrowd_settings_endpoint()` and write arbitrary attacker-controlled key-value pairs directly into the `helpfulcrowd_options` WordPress database option via `update_option()` without any sanitization or allowlist filtering, enabling full unauthenticated modification of the plugin's stored configuration.
Title Helpfulcrowd Product Reviews <= 1.2.9 - Inccorect Authorization via Type Juggling in 'token' Parameter to Arbitrary Settings Update
Weaknesses CWE-843
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published:

Updated: 2026-06-09T03:41:18.492Z

Reserved: 2026-05-13T19:49:04.220Z

Link: CVE-2026-8499

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-06-09T05:16:39.373

Modified: 2026-06-09T05:16:39.373

Link: CVE-2026-8499

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-09T08:56:14Z

Weaknesses