CVE-2026-88848— MasterStudy LMS 1.9 - < 3.7.50 - Subscriber+ Membership Plan Quota and Category Restriction Bypass
Quick assessment
Affected
Unknown MasterStudy 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.
WordPress 插件 MasterStudy LMS 在 1.9 至 3.7.50 版本中存在安全漏洞。该漏洞允许任何成员将自己注册到其会员计划未涵盖的限制性付费课程，且不受其会员计划所允许的课程数量限制。具体来说，插件没有验证用户请求注册的课程是否在其会员计划范围内，也未验证用户提交的计划标识符是否为其实际持有的有效计划，从而导致用户能够绕过权限控制，非法访问付费内容。
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I. Basic Information for CVE-2026-88848
Vulnerability Information
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Vulnerability Title
MasterStudy LMS 1.9 - < 3.7.50 - Subscriber+ Membership Plan Quota and Category Restriction Bypass
Source: CVE Program / CVE List V5
Vulnerability Description
The MasterStudy LMS WordPress plugin from 1.9 before 3.7.50 does not verify that a course a member asks to enrol in is covered by their membership plan, nor that the plan identifier submitted with the request is one they actually hold, allowing any member to enrol themselves into restricted paid courses outside their plan and beyond the number of courses it entitles them to.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
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 | MasterStudy LMS | 1.9 ~ 3.7.50 | - |
|
II. Public POCs for CVE-2026-88848
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Other References for CVE-2026-88848 (1)
-
https://wpscan.com/vulnerability/13258868-aeed-4664-8b38-ffb1f802895a/ exploit vdb-entry technical-description
Same Patch Batch · Unknown · 2026-09-25 · 6 CVEs total
| CVE-2026-80514 | 5.3 MEDIUM | wpForo Forum 3.0.0 - 3.1.5 - Unauthenticated AI Credit Exhaustion via IP Rate Limit Bypass |
| CVE-2026-86837 | 5.3 MEDIUM | Bookly < 28.3 - Unauthenticated Customer PII Update via Verification Bypass |
| CVE-2026-78394 | Link Library < 7.9.6 - Contributor+ Path Traversal via 'filepath' Parameter | |
| CVE-2026-78397 | Link Library < 7.9.6 - Unauthenticated SSRF via Reciprocal Link Validation | |
| CVE-2026-78393 | Link Library < 7.9.6 - Reflected XSS via 'link_tags' and 'link_price' Sort and Breadcrumb |
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