CVE Explorer
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 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,
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"defaultStatus":"unaffected","product":"Bread & Butter: AI-Powered Lead Intelligence","vendor":"breadbutter","versions":[{"lessThanOrEqual":"8.2.0.25","status":"affected","version":"0","versionType":"semver"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:13e41a7c12991f1dccbccaf918226ad70074a950c64a0e5dd09cd4ff40f8cf5a · sha256:8da45943d52038d0… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"baseScore":6.4,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:13e41a7c12991f1dccbccaf918226ad70074a950c64a0e5dd09cd4ff40f8cf5a · sha256:8da45943d52038d0… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-79","description":"CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:13e41a7c12991f1dccbccaf918226ad70074a950c64a0e5dd09cd4ff40f8cf5a · sha256:8da45943d52038d0… · /containers/cna/problemTypes/0/descriptions/0
Source references
5 source assertions{"url":"https://plugins.trac.wordpress.org/browser/bread-butter/tags/8.2.0.25/src/Base/Shortcode.php#L364"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:13e41a7c12991f1dccbccaf918226ad70074a950c64a0e5dd09cd4ff40f8cf5a · sha256:8da45943d52038d0… · /containers/cna/references/4
{"url":"https://plugins.trac.wordpress.org/browser/bread-butter/tags/8.2.0.25/src/Base/Shortcode.php#L380"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:13e41a7c12991f1dccbccaf918226ad70074a950c64a0e5dd09cd4ff40f8cf5a · sha256:8da45943d52038d0… · /containers/cna/references/2
{"url":"https://plugins.trac.wordpress.org/browser/bread-butter/trunk/src/Base/Shortcode.php#L364"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:13e41a7c12991f1dccbccaf918226ad70074a950c64a0e5dd09cd4ff40f8cf5a · sha256:8da45943d52038d0… · /containers/cna/references/3
{"url":"https://plugins.trac.wordpress.org/browser/bread-butter/trunk/src/Base/Shortcode.php#L380"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:13e41a7c12991f1dccbccaf918226ad70074a950c64a0e5dd09cd4ff40f8cf5a · sha256:8da45943d52038d0… · /containers/cna/references/1
{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/0728b42b-5ec7-46a2-a9a5-3316107e9324?source=cve"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:13e41a7c12991f1dccbccaf918226ad70074a950c64a0e5dd09cd4ff40f8cf5a · sha256:8da45943d52038d0… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.