PT-2026-84115 · WordPress · Blocksy Companion

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CVE-2026-18488

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Published

2026-09-01

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Updated

2026-09-01

CVSS v3.1

6.4

Medium

VectorAV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Name of the Vulnerable Software and Affected Versions Blocksy Companion versions prior to 2.1.52
Description Insufficient input sanitization and output escaping in the tagName block attribute (blocksy/dynamic-data) allow authenticated attackers with author-level access or higher to perform Stored Cross-Site Scripting. This enables the injection of arbitrary web scripts into pages, which execute when a user visits the affected page.
Recommendations Update Blocksy Companion to version 2.1.52 or later.

Fix

XSS

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Weakness Enumeration

Related Identifiers

CVE-2026-18488

Affected Products

Blocksy Companion