Arbitrary file upload in Wpmudev Hustle – Email Marketing, Lead Generation, Optins, Popups
CVE-2026-0911
The Hustle – Email Marketing, Lead Generation, Optins, Popups plugin for WordPress is vulnerable to arbitrary file uploads due to incorrect file type validation in the action_import_module() function in all versions up to, and including, 7.8.9.2. This makes it possible for authenticated attackers, with a lower-privileged role (e.g., Subscriber-level access and above), to upload arbitrary files on the affected site's server which may make remote code execution possible. Successful exploitation requires an admin to grant Hustle module permissions (or module edit access) to the low-privileged user so they can access the Hustle admin page and obtain the required nonce.
Vulnerability class: Unrestricted File Upload
EPSS: 0.005 (42.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
Frequently asked questions
- What is CVE-2026-0911?
- CVE-2026-0911 is a high-severity vulnerability in Wpmudev Hustle – Email Marketing, Lead Generation, Optins, Popups, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 7.5/10. Published 2026-01-24.
- How severe is CVE-2026-0911?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2026-0911 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.