What is CVE-2026-4279?

CVE-2026-4279 is a medium-severity vulnerability in Breadbutter Bread & Butter: Ai-powered Lead Intelligence, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2026-04-22.

How severe is CVE-2026-4279?

Medium severity. CVSS v3 base score is 6.4 out of 10.

XSS in Breadbutter Bread & Butter: Ai-powered Lead Intelligence

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 including, 8.2.0.25. This is due to insufficient input sanitization and outp…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.000 (2.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N.

Affected products

Breadbutter Bread & Butter: Ai-powered Lead Intelligence — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

Frequently asked questions

What is CVE-2026-4279?: CVE-2026-4279 is a medium-severity vulnerability in Breadbutter Bread & Butter: Ai-powered Lead Intelligence, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2026-04-22.
How severe is CVE-2026-4279?: Medium severity. CVSS v3 base score is 6.4 out of 10.