CVE-2026-118166 (GCVE-0-2026-118166)
Vulnerability from cvelistv5 – Published: 2026-11-06 07:30 – Updated: 2026-11-06 11:50
VLAI
EPSS
VEX
Title
MC4WP: Mailchimp for WordPress < 4.15.0 - Unauthenticated Arbitrary Shortcode Execution via Dynamic Content Tag
Summary
The MC4WP: Mailchimp for WordPress WordPress plugin before 4.15.0 does not prevent request-derived values in its dynamic content tags from being processed as shortcodes when a form is embedded with its block, allowing unauthenticated visitors to execute arbitrary registered shortcodes with attacker-chosen attributes. This requires the site owner to have added a request-derived tag to the form content and to embed the form with the block rather than the classic shortcode.
Severity
4.8 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-06 11:41 UTC
CWE
- CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
- CWE-74 - Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
Assigner
WPScan
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://wpscan.com/vulnerability/a8b2a564-25ae-4e… | exploitvdb-entrytechnical-description |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Unknown | MC4WP: Mailchimp for WordPress |
Affected:
0 , < 4.15.0
(semver)
|
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