Quick answers
- Is CVE-2026-88849 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-88849 being exploited in the wild.
- How severe is CVE-2026-88849?
- Informational severity, published 22 October 2026.
- Which products and versions are affected?
- MasterStudy LMS 3.7.13 through 3.7.54.
- Is there a fix for CVE-2026-88849?
- Yes: fixed in 3.7.55. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-88849 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-88849?
- 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.
How to fix
- Fixed in: 3.7.55
Technical details
The student-enrollment feature in MasterStudy LMS fails to validate whether an instructor has authorization over a target user before allowing profile updates. Users with the Instructor role can invoke the student-enrollment functionality to modify first name, last name, and public display name fields for any registered account on the site, including administrators. This access control bypass (CWE-863) requires attacker-controlled instructor credentials but no further user interaction.
Affected products
- MasterStudy MasterStudy LMS 3.7.13 through 3.7.54
Timeline
- 2026-10-20: disclosed
- 2026-10-22: advisory