Tag Groups <= 3.0.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'separator' Shortcode Attribute

ID

WPSEC-2026-2787

Plugin

PublishPress Tag Groups is the Advanced Way to Display Your Taxonomy Terms (tag-groups)

Affected

all versions before 3.0.1

Remediation

Update to 3.0.1 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 Low · Affected versions Low among sites WPSec scans, 2026-11-10

Attack surface

Tag Groups on WPSec AttackSurface

Fix released

2026-11-09

Published

2026-11-10

Description

The PublishPress Tag Groups is the Advanced Way to Display Your Taxonomy Terms plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'separator' attribute of the tag_groups_cloud, tag_groups_accordion and tag_groups_alphabet_tabs shortcodes in all versions up to, and including, 3.0.0, due to the attribute being HTML-entity-decoded and then output without escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

References

• https://wpsec.com/vuln/WPSEC-2026-2787/
• https://plugins.svn.wordpress.org/tag-groups/tags/3.0.1/
• https://wordpress.org/plugins/tag-groups/

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