Otter Blocks <= 3.2.7 - Authenticated (Contributor+) Stored Cross-Site Scripting via Dynamic Content Magic Tags

ID

WPSEC-2026-1360

Plugin

Otter Blocks – Gutenberg Blocks, Page Builder for Gutenberg Editor & FSE (otter-blocks)

Affected

all versions before 3.2.8

Remediation

Update to 3.2.8 or later.

CVSS 3.1

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

Weakness

CWE-79

Usage

Plugin Medium · Affected versions Medium among sites WPSec scans, 2026-10-21

Attack surface

Otter Blocks on WPSec AttackSurface

Fix released

2026-10-19

Published

2026-10-21

Description

The Otter Blocks plugin for WordPress is vulnerable to Stored Cross-Site Scripting via dynamic content magic tags in all versions up to, and including, 3.2.7 due to resolved magic tag values being substituted into markup without escaping, including inside HTML attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to place magic tags in attributes whose resolved, attacker-controlled values break out of the attribute and inject arbitrary web scripts that execute whenever a user accesses an affected page.

References

• https://wpsec.com/vuln/WPSEC-2026-1360/
• https://plugins.svn.wordpress.org/otter-blocks/tags/3.2.8/
• https://wordpress.org/plugins/otter-blocks/

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

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