Quick answers
- Is CVE-2026-88847 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-88847 being exploited in the wild.
- How severe is CVE-2026-88847?
- Medium severity, with a CVSS score of 4.3, published 24 September 2026.
- Which products and versions are affected?
- MasterStudy LMS before 3.7.50.
- Is there a fix for CVE-2026-88847?
- A patch was published on 2026-09-24: Fixed in version 3.7.50 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-88847 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-88847?
- Check whether you run MasterStudy LMS at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The plugin does not enforce enrollment checks before recording lesson completion via an authenticated endpoint, a broken access control vulnerability (CWE-862). Any authenticated user with subscriber privileges can create or modify course progress records for courses they are not enrolled in. The vulnerability requires authentication but no specific authorization level, affecting the integrity of course completion tracking.
Affected products
- MasterStudy MasterStudy LMS before 3.7.50
Timeline
- 2026-09-24: disclosed
- 2026-09-24: patched: Fixed in version 3.7.50