CVE-2026-82845— Masteriyo LMS < 3.4.1 - Subscriber+ PHP Object Injection
Quick assessment
Affected
Unknown Masteriyo LMS
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
在 3.4.1 版本之前，Masteriyo LMS WordPress 插件未阻止以元数据形式存储的用户输入值在读取时进行反序列化。这使得拥有基础账户的用户可以注入任意 PHP 对象，并通过该插件捆绑库中提供的某个类，在服务器上实现任意代码的写入与执行。该漏洞的一种较弱形式无需账户即可触发，其结果是允许任意文件写入，而非代码执行。
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I. Basic Information for CVE-2026-82845
Vulnerability Information
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Vulnerability Title
Masteriyo LMS < 3.4.1 - Subscriber+ PHP Object Injection
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Unknown | Masteriyo LMS | 0 ~ 3.4.1 | - |
|
II. Public POCs for CVE-2026-82845
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Proof of Concept for CVE-2026-82845 (1)
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🔗 Masteriyo LMS < 3.4.1 – Subscriber+ PHP Object Injection | CVE 2026-82845 | Plugin Vulnerabilities exploit vdb-entry technical-description
Same Patch Batch · Unknown · 2026-09-12 · 36 CVEs total
| CVE-2026-77006 | WebTotem Backups <= 1.0.1 - Subscriber+ Arbitrary File Deletion via Path Traversal | |
| CVE-2026-82847 | Masteriyo LMS < 3.4.1 - Instructor+ Stored XSS via Course Highlights | |
| CVE-2026-81742 | BE REST Endpoints <= 1.0.0 - Unauthenticated Stored XSS and Widget Manipulation | |
| CVE-2026-84023 | BEAR - Bulk Editor and Products Manager Professional for WooCommerce < 1.2.2 - Taxonomy Te | |
| CVE-2026-81090 | Gpx2Graphics <= 0.3 - Arbitrary File Upload via CSRF | |
| CVE-2026-81429 | Export & Import WPBakery Page Builder <= 1.0.2 - Stored XSS via CSRF | |
| CVE-2026-81402 | DS Ad Rotator <= 0.8 - Unauthenticated Arbitrary File Upload | |
| CVE-2026-80491 | SAMO Forms <= 1.0.0 - Unauthenticated SQLi | |
| CVE-2026-80494 | Yogeta WP Cloud <= 1.0 - Unauthenticated Arbitrary File Download | |
| CVE-2026-82851 | Masteriyo LMS 1.14.0 - 3.4.0 - Instructor+ Arbitrary Post Disclosure via IDOR | |
| CVE-2026-77752 | Temporary Login Without Password 1.5 - 1.9.8 - Multisite Subsite Admin+ Network Super Admi | |
| CVE-2026-77689 | Amelia Pro 9.0 - 9.8 - Unauthenticated Payment Bypass | |
| CVE-2026-77705 | Amelia < 2.4.10 - Amelia Manager+ WordPress Account Takeover | |
| CVE-2026-77753 | Temporary Login Without Password < 1.9.9 - Authenticated Temporary Access Revocation Bypas | |
| CVE-2026-78152 | SureRank 1.6.2 - 1.10.0 - Unauthenticated Author Email Disclosure via Person Schema | |
| CVE-2026-75800 | Frontegg SAML SSO <= 1.0.1 - Unauthenticated Account Takeover via Unverified SAMLResponse | |
| CVE-2026-77005 | Code Monkeys Proposals <= 1.0.1 - Subscriber+ Arbitrary File Deletion via Path Traversal | |
| CVE-2026-83532 | Custom Menu Wizard <= 3.3.1 - Contributor+ Stored XSS via Shortcode Attributes | |
| CVE-2026-87797 | Client Invoicing by Sprout Invoices < 20.8.16 - Subscriber+ Private Note Overwrite via si_ | |
| CVE-2026-87918 | WPBot < 8.5.7 - Unauthenticated AI Provider API Abuse via Multiple AJAX Actions |
Showing top 20 of 36 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Masteriyo LMS
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CVE-2026-82847
Masteriyo LMS < 3.4.1 - Instructor+ Stored XSS via Course Hi -
CVE-2026-82851
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CVE-2026-82848
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CVE-2026-82846
Masteriyo LMS 1.18.0 - 2.3.3 - Instructor+ Stored XSS via Co -
CVE-2026-19712
Masteriyo LMS < 2.3.3 - Instructor+ Stored XSS via Quiz Desc
Same vendor: Unknown
-
CVE-2026-87919
Product XML Feed Manager for WooCommerce < 3.1.1 - Contribut -
CVE-2026-87918
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CVE-2026-87892
Rox Appointment Booking < 1.2.0 - Unauthenticated Price Mani -
CVE-2026-87894
Rox Appointment Booking 1.0.9 - 1.2.2 - Unauthenticated Cust -
CVE-2026-87891
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