Signal is active with 1 mentions in latest observed window
Recommended action window: Monitor and triage in normal cycle
NVD description
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, 8.2.0.25. 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.
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
NONE
Momentum
STABLE
CVE-2026-4279 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 inclu… https://www.cve.org/CVERecord?id=CVE-2026-4279
Post summary
A stored XSS vulnerability (CVE-2026-4279) was disclosed for the Bread & Butter WordPress plugin, affecting all versions up to a certain point, with no patch or exploitation details provided.
CVE-2026-4279 Stored Cross-Site Scripting in Bread & Butter WordPress Plugin Versions Up to 8.2.0.25 https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-4279
Post summary
The post announces a stored XSS vulnerability (CVE-2026-4279) affecting Bread & Butter WordPress plugin versions up to 8.2.0.25.