CVE-2024-3961
ConvertKit <= 2.4.9 - Missing Authorization
CVSS Score
5.3
EPSS Score
0.0%
EPSS Percentile
0th
The ConvertKit – Email Newsletter, Email Marketing, Subscribers and Landing Pages plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the tag_subscriber function in all versions up to, and including, 2.4.9. This makes it possible for unauthenticated attackers to subscribe users to tags. Financial damages may occur to site owners if their API quota is exceeded.
| CWE | CWE-862 |
| Vendor | convertkit |
| Product | kit (formerly convertkit) – email newsletter, email marketing, membership, subscribers and landing pages |
| Published | Jun 21, 2024 |
| Last Updated | Apr 8, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
convertkit / Kit (formerly ConvertKit) – Email Newsletter, Email Marketing, Membership, Subscribers and Landing Pages
0 ≤ 2.4.9
References
wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/79d828b8-aea2-4705-ae23-ac70133a6c3e?source=cve plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3104932%40convertkit%2Ftrunk&old=3085997%40convertkit%2Ftrunk&sfp_email=&sfph_mail=
Credits
AmrAwad