# CVE-2026-82845

## Summary

- **CVE ID:** CVE-2026-82845
- **Severity:** CRITICAL
- **CVSS Score:** 9.9 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H)
- **CWE:** N/A
- **Published:** Sep 12, 2026
- **Last Modified:** Sep 12, 2026

## Description

The Masteriyo LMS  WordPress plugin before 3.4.1 does not prevent user-supplied values held as metadata from being deserialized when they are read back, allowing users with a minimal account to inject arbitrary PHP objects and, by way of a class shipped in a library bundled with the Masteriyo LMS  WordPress plugin before 3.4.1, write and execute arbitrary code on the server. A weaker form of the same issue is reachable without an account and yields an arbitrary file write rather than code execution.

## Affected Products

- Unknown — Masteriyo LMS (0)

## References

- [CNA](https://wpscan.com/vulnerability/5ced30ea-8b78-495f-b10c-42b3f10adcb3/)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.35%
- **EPSS Percentile:** 29.1

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._