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Fencer Vulns
critical 9.8

CVE-2022-0441 in the critical feed json

MasterStudy LMS < 2.7.6 - Unauthenticated Admin Account Creation

published 2022-03-07 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-15580

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
85.3%
EPSS 85.3% chance of exploitation in 30 days, percentile 99.7%
public exploits
2
Metasploit, Exploit-DB, plus a Nuclei check

Summary

The MasterStudy LMS WordPress plugin before 2.7.6 does to validate some parameters given when registering a new account, allowing unauthenticated users to register as an admin

Patch / fix

  • stylemixthemes masterstudy_lms 2.7.6

Timeline

  1. First public exploit (Metasploit auxiliary/admin/http/wp_masterstudy_privesc)
  2. Published

Exploit prediction

85.33% chance of exploitation in the next 30 days, higher than 99.7% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • Metasploit auxiliary/admin/http/wp_masterstudy_privesc Wordpress MasterStudy Admin Account Creation metasploit auxiliary, normal rank, 2022-02-18
  • EDB-50752 WordPress Plugin MasterStudy LMS 2.7.5 - Unauthenticated Admin Account Creation webapps, 2022-02-18
  • Nuclei template MasterStudy LMS <2.7.6 - Improper Access Control nuclei detection template
  • wpscan.com https://wpscan.com/vulnerability/173c2efe-ee9c-4539-852f-c242b4f728ed referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

  • Unknown MasterStudy LMS – WordPress LMS Plugin

Classification

Weakness
  • CWE-269 Improper Privilege Management
Technology feeds

References

Sources

Fencer Vulns 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.