Vulnerability · Published Oct 30, 2026 · Assigned by Patchstack
CVE-2026-118090WordPress MasterStudy LMS plugin <= 3.7.55 - PHP Object Injection vulnerability
High 8.8
In plain English
A high-severity unsafe deserialization in MasterStudy LMS from Stylemix. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 39% of all known vulnerabilities).
Severity (CVSS 3.1)8.8High
Exploit odds (30 days)0.4%top 61.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Subscriber PHP Object Injection in MasterStudy LMS <= 3.7.55 versions.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Stylemix | MasterStudy LMS | n/a – through 3.7.55 |
Weakness: CWE-502 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H