Bread & Butter: Content Gating for Verified Leads <= 8.6.0.107 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes
The Bread & Butter plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'breadbutter-customevent-button' shortcode in all versions up to, and including, 8.6.0.107. This is due to insufficient input sanitization and output escaping on the 'event' shortcode attribute. The customEventShortCodeButton() function takes the 'event' attribute value and directly interpolates it into a JavaScript string within an onclick HTML attribute without applying esc_attr() or esc_js(). Notably, the sister function customEventShortCode() properly uses esc_js() for the same attribute, but this was omitted in the button variant. 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 the page and clicks the injected button.
Betroffene Software
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| Plattform | Paket | Anfällige Versionen | Behoben in |
|---|---|---|---|
| WordPress-Plugin | Bread & Butter – Identify Website Visitors, Score Leads & Gate Content | <= 8.6.0.107 | 8.7.0.139 |
Verweise
- CVSS-Vektor
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N- Schwäche (CWE)
CWE-79- Plattform
- WordPress
- Paket
Bread & Butter – Identify Website Visitors, Score Leads & Gate Content- Veröffentlicht
- 21.04.2026
- Aktualisiert
- 11.10.2026 10:22
Quellen und Lizenzen
Wordfence Intelligence - 0728b42b-5ec7-46a2-a9a5-3316107e9324 - Wordfence Intelligence
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Schwachstellenhistorie: Bread & Butter – Identify Website Visitors, Score Leads & Gate Content
Alle veröffentlichten Schwachstellen dieses Pakets (WordPress-Plugin), neueste zuerst. Zeigt, ob es ein einmaliger Ausrutscher ist oder ein Paket, das man im Auge behalten muss.
- Einträge insgesamt
- 3
- Erste → letzte
- 11.2024 04.2026
- Ohne Fix
- 0
- In Angriffen ausgenutzt
- 0
Verteilung nach Schweregrad
- Mittel 3
Veröffentlichungen pro Jahr
- 2024: 1
- 2025: 1
- 2026: 1
-
Bread & Butter: Content Gating for Verified Leads <= 8.6.0.107 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes dieser Eintrag
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