Blocksy Companion <= 2.1.58 - Authenticated (Contributor+) Sensitive Information Exposure via blocksy_posts Shortcode

ID

WPSEC-2026-0686

Plugin

Blocksy Companion (blocksy-companion)

Affected

all versions before 2.1.59

Remediation

Update to 2.1.59 or later.

CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Weakness

CWE-200

Usage

Plugin Medium · Affected versions Medium among sites WPSec scans, 2026-10-10

Attack surface

Blocksy Companion on WPSec AttackSurface

Fix released

2026-10-08

Published

2026-10-10

Description

The Blocksy Companion plugin for WordPress is vulnerable to Sensitive Information Exposure via the blocksy_posts shortcode and posts block in all versions up to, and including, 2.1.58. This is due to the plugin accepting arbitrary post types, including non-viewable ones, and allowing filtering by protected meta keys and values supplied in shortcode attributes. This makes it possible for authenticated attackers with Contributor-level access and above to list content from non-public post types and infer protected post meta values.

References

• https://wpsec.com/vuln/WPSEC-2026-0686/
• https://plugins.svn.wordpress.org/blocksy-companion/tags/2.1.59/
• https://wordpress.org/plugins/blocksy-companion/

Published by WPSec. Provided as is, without warranty. Corrections: contact us.

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