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Fencer Intel
low 2.7

CVE-2026-88844 json

MasterStudy LMS 3.6.2 - < 3.7.50 - Instructor+ Student PII Disclosure via IDOR

published last mo. modified last mo. also EUVD-2026-82678

cvss
2.7
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 22%
public exploits
0
none known

Summary

The MasterStudy LMS WordPress Plugin WordPress plugin before 3.7.50 does not verify that the requesting user owns the course before returning its enrolled-student data, allowing users with the MasterStudy LMS WordPress Plugin WordPress plugin before 3.7.50's Instructor role to disclose the names and email addresses of students enrolled in other instructors' courses.

Patch / fix

  • Unknown MasterStudy LMS WordPress Plugin 3.7.50

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CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
last mo.

Exploit prediction

0.30% chance of exploitation in the next 30 days, higher than 22% of all scored CVEs (FIRST EPSS, 2026-11-11).

Exploits and checks

  • wpscan.com https://wpscan.com/vulnerability/13b4f5c4-db4a-4bc2-b092-07747ee790e6/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 2.7 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N
CNA 3.1 2.7 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N

Affected products

  • Unknown MasterStudy LMS WordPress Plugin

Classification

Weakness
  • CWE-639 Authorization Bypass Through User-Controlled Key
Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.