CVE-2026-5060
MasterStudy LMS WordPress Plugin – for Online Courses and Education <= 3.7.14 - Insecure Direct Object Reference to Authenticated (Instructor+) Arbitrary Attachment Deletion
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
CISA's decision points: whether it is exploited, whether attacks can be automated, and how much control an attacker gets. Assessed (SSVC 2.0.3).What do these mean? →
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
The MasterStudy LMS WordPress Plugin – for Online Courses and Education plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 3.7.14. This is due to the `stm_lms_delete_cover()` function lacking ownership validation on the `file_id` parameter before passing it to `wp_delete_attachment()`. This makes it possible for authenticated attackers, with Instructor-level access and above, to delete arbitrary attachments belonging to any user by enumerating sequential attachment IDs.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- stylemix MasterStudy LMS WordPress Plugin – for Online Courses and Education
through 3.7.23
References 4
plugins.trac.wordpress.org
- browser/masterstudy-lms-learning-management-system/tags/3.7.14/_core/lms/classes/user.php#L2107
- browser/masterstudy-lms-learning-management-system/tags/3.7.14/_core/lms/classes/user.php#L2093
- changeset?sfp_email=&sfph_mail=&reponame=&new=3501788%40masterstudy-lms-learning-management-system%2Ftrunk&old=3496678%40masterstudy-lms-learning-management-system%2Ftrunk&sfp_email=&sfph_mail=