CVE-2026-85571: Tutor LMS missing authorization check vulnerability
medium 6.5 published 2026-10-10 · updated 2026-10-13
- Affected versions
- 4.0.5 up to (not including) 4.1.1
- Fixed in
- 4.1.1
- Latest version
- 4.2.0
- Severity
- Medium · CVSS 6.5
- Active installs
- 100,000+
- Type
- Missing authorization check
What an attacker needs
- Access: A logged-in account with Instructor-level access.
CVSS vector (score by CISA ADP): CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
What to do now
- Update Tutor LMS to 4.1.1 or newer (the latest is 4.2.0): Dashboard → Updates, or Plugins → “update now”.
- If you cannot update right away, deactivate it until you can.
- Turn on auto-updates for it: Plugins → “Enable auto-updates” on its row.
- Not sure which version you run? Check your version against every known Tutor LMS issue.
With WP-CLI:
wp plugin get tutor --field=version. - If you ran an affected version and something looks off (new admin users, spam pages, redirects), run the free scan below.
The advisory
The Tutor LMS WordPress plugin before 4.1.1 does not verify that the posts named in its course content ordering requests belong to a course the requester manages, allowing users with instructor level access to reassign the parent of any post on the site, taking other instructors' course content into their own courses and making arbitrary published content unreachable.
References
- NVD CVE-2026-85571 nvd.nist.gov
- WPScan advisory wpscan.com
Related
Ran an affected version? Check your site for signs of a hack
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Where this data comes from
- CVE record, score and references: NIST National Vulnerability Database (NVD), checked 2026-11-04. This product uses data from the NVD API but is not endorsed or certified by the NVD.
- Versions and install counts: wordpress.org/plugins/tutor (Plugins API), fetched 2026-11-04.
- The summary, “what an attacker needs” and “what to do” sections are our plain-English reading of the record and the plugin's release history; the quoted description is the record's own text. Spot an error? Email Daniel.