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CVE-2026-12271— Tutor LMS < 3.9.13 - Subscriber+ Arbitrary Quiz Attempt Modification via IDOR

Quick assessment

Affected
Unknown Tutor 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.

themeum tutor lms是themeum公司开源的一款在线学习管理系统。 WordPress Tutor LMS 3.9.13之前版本存在授权问题漏洞，该漏洞源于未验证目标测验尝试的所有权，允许具有订阅者级别及以上访问权限的已验证用户修改和强制完成其他学生的测验尝试，覆盖其记录的成绩和通过/失败结果。

AI Predicted 5.6 Difficulty: Easy EPSS 0.29% · P19

Possible ATT&CK Techniques 1 AI

T1136 · Create Account

Affected Version Matrix 1

VendorProduct Version RangeStatus
Unknown Tutor LMS < 3.9.13 affected
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I. Basic Information for CVE-2026-12271

Vulnerability Information
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Vulnerability Title
Tutor LMS < 3.9.13 - Subscriber+ Arbitrary Quiz Attempt Modification via IDOR
Source: CVE Program / CVE List V5
Vulnerability Description
The Tutor LMS WordPress plugin before 3.9.13 does not verify ownership of the targeted quiz attempt before writing to it, allowing authenticated users with subscriber-level access and above to modify and force-complete other students' quiz attempts, overwriting their recorded marks and pass/fail result.
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
Vulnerability Title
WordPress Tutor LMS 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
themeum tutor lms是themeum公司开源的一款在线学习管理系统。 WordPress Tutor LMS 3.9.13之前版本存在授权问题漏洞，该漏洞源于未验证目标测验尝试的所有权，允许具有订阅者级别及以上访问权限的已验证用户修改和强制完成其他学生的测验尝试，覆盖其记录的成绩和通过/失败结果。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Unknown Tutor LMS 0 ~ 3.9.13 -

II. Public POCs for CVE-2026-12271

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III. Intelligence Information for CVE-2026-12271

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Vendor Advisories for CVE-2026-12271 (1)

Same Patch Batch · Unknown · 2026-07-13 · 11 CVEs total

CVE-2026-12275 Tutor LMS < 3.9.13 - Subscriber+ Unauthorized Course Enrollment and Private Course Content
CVE-2026-12397 WP Job Portal < 2.5.5 - Subscriber+ Employer Email Disclosure via IDOR
CVE-2026-12582 Library Management System < 3.5.8 - Unauthenticated SQL Injection via book_id
CVE-2026-12396 WP Job Portal < 2.5.5 - Subscriber+ Arbitrary Job Approval, Featuring and Rejection
CVE-2026-11964 User Registration & Membership < 5.2.2 - Unauthenticated PayPal Webhook Signature Verifica
CVE-2026-12081 Database for Contact Form 7, WPforms, Elementor forms < 1.5.2 - Unauthenticated PHP Object
CVE-2026-12273 Tutor LMS < 3.9.13 - Subscriber+ Arbitrary Auto-Approved Comment Creation
CVE-2026-12274 Tutor LMS < 3.9.13 - Instructor+ Arbitrary Post Overwrite via IDOR
CVE-2026-11963 User Registration & Membership < 5.2.2 - Subscriber+ Cross-User Role and Membership Tier M
CVE-2026-10551 Breeze Cache < 2.5.6 - Unauthenticated Stored XSS via Minify Library

IV. Related Vulnerabilities

Same product: Tutor LMS
Same vendor: Unknown

V. Comments for CVE-2026-12271

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