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Description

The Mailchimp List Subscribe Form plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 2.0.0. This is due to missing or incorrect nonce validation on the mailchimp_sf_change_list_if_necessary() function. This makes it possible for unauthenticated attackers to change Mailchimp lists via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

PUBLISHED Reserved 2025-10-24 | Published 2026-02-19 | Updated 2026-02-19 | Assigner Wordfence




MEDIUM: 4.3CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

Problem types

CWE-352 Cross-Site Request Forgery (CSRF)

Product status

Default status
unaffected

* (semver)
affected

Timeline

2026-02-18:Disclosed

Credits

SHIVAM KUMAR finder

References

www.wordfence.com/...-0031-41c1-98ac-ce96cd599a60?source=cve

plugins.trac.wordpress.org/...ailchimp&sfp_email=&sfph_mail=

cve.org (CVE-2025-12172)

nvd.nist.gov (CVE-2025-12172)

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