CVE-2026-118090 Details
Description
Subscriber PHP Object Injection in MasterStudy LMS <= 3.7.55 versions.
A PHP Object Injection vulnerability has been identified in the MasterStudy LMS WordPress plugin, affecting versions through 3.7.55. This vulnerability allows attackers to manipulate data processing on the site, potentially leading to harmful actions on the server.
Users are advised to update the MasterStudy LMS plugin to version 3.7.56 or later. Patchstack has also issued a mitigation rule to block attacks until the plugin is updated.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 30, 2026CISA-ADP
Assessed Oct 30, 2026References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-502 | Deserialization of Untrusted Data | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| MasterStudy LMS | <= 3.7.55 (semver) |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Oct 30, 2026 | New CVE Received | [email protected] |
| Oct 30, 2026 | CVE Modified | CISA-ADP |