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CVE-2026-88849— MasterStudy LMS 3.7.13 - 3.7.54 - Instructor+ Arbitrary User Display Name Update via Student Enrollment

Quick assessment

Affected
Unknown MasterStudy LMS WordPress Plugin
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.

在版本 3.7.55 之前的 MasterStudy LMS WordPress 插件中，其“学生注册”功能未验证目标用户与请求讲师之间是否存在任何关联。这导致拥有“讲师”角色的用户可以覆盖站点上任何已注册用户（包括管理员）的“名”、“姓”和“公开显示名称”，从而可能实施身份冒充和钓鱼攻击。

AI Predicted 6.5 Difficulty: Easy

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts
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I. Basic Information for CVE-2026-88849

Vulnerability Information
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Vulnerability Title
MasterStudy LMS 3.7.13 - 3.7.54 - Instructor+ Arbitrary User Display Name Update via Student Enrollment
Source: CVE Program / CVE List V5
Vulnerability Description
The MasterStudy LMS WordPress Plugin WordPress plugin before 3.7.55 does not verify that a user targeted through its student-enrolment feature has any relationship to the requesting instructor, allowing users with the Instructor role to overwrite the first name, last name and public display name of any registered user on the site, including administrators, enabling impersonation and phishing.
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 MasterStudy LMS WordPress Plugin 3.7.13 ~ 3.7.55 -

II. Public POCs for CVE-2026-88849

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III. Intelligence Information for CVE-2026-88849

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Other References for CVE-2026-88849 (1)

Same Patch Batch · Unknown · 2026-10-22 · 13 CVEs total

CVE-2026-97328 WebP Express < 0.25.16 - Unauthenticated Stored XSS via Alter HTML Parser
CVE-2026-111971 Photo Engine < 6.5.8 - Author+ Stored XSS via Collection Name
CVE-2026-111972 Photo Engine < 6.5.8 - Author+ Arbitrary Attachment Deletion via IDOR
CVE-2026-111958 Royal MCP < 1.5.7 - Authentication Bypass via Preview Link Token
CVE-2026-78392 Link Library < 7.9.6 - Contributor+ Stored XSS via 'link_target' Parameter
CVE-2026-110011 MB Custom Post Types & Custom Taxonomies 2.4.0 - 2.12.2 - Contributor+ Post Type Definitio
CVE-2026-110010 MB Custom Post Types & Custom Taxonomies 2.0.2 - 2.12.2 - Unauthenticated Settings Reset v
CVE-2026-103234 WP Ultimate Review < 2.4.5 - Unauthenticated Arbitrary Shortcode Execution via Reviewer Em
CVE-2026-100142 FluentCart < 2.2.0 - Unauthenticated Customer Address Disclosure via IDOR
CVE-2026-109931 Infility Global < 2.16.25 - Unauthenticated Google Translate API Key Update
CVE-2026-109927 CM HIPAA Forms < 3.3.2 - hipaa_forms+ Privilege Escalation via cm_hipaa_update_user_role
CVE-2026-109987 PixelYourSite (Free & Pro) - Unauthenticated Stored XSS via Cookie

IV. Related Vulnerabilities

Same product: MasterStudy LMS WordPress Plugin
Same vendor: Unknown

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