CVE-2026-112329
Sensei LMS 4.26.4 Broken Access Control via save_new_message
CVSS Score
4.3
EPSS Score
0.0%
EPSS Percentile
0th
The Sensei LMS WordPress plugin before 4.26.4 contains a broken access control vulnerability in the legacy save_new_message handler hooked on the init action, which validates only a generic nonce without verifying course enrollment or restricting post_id to valid post types. Authenticated attackers, including unprivileged Subscribers, can supply an arbitrary post_id for any course, lesson, or quiz to create a private message addressed to that post's author, bypassing the enrollment checks enforced by the newer REST send-message controller.
| CWE | CWE-862 |
| Vendor | automattic |
| Product | sensei lms |
| Published | Oct 19, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None
Affected Versions
Automattic / Sensei LMS
0 < 4.26.4
References
Credits
Ikram-4