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CVE-2026-16759— Tutor LMS <= 4.0.5 - Unauthenticated Remote Code Execution via 'template' and 'data' POST Parameters

Quick assessment

Affected
themeum Tutor LMS – eLearning and online course solution
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 – eLearning and online course solution是themeum公司的一款在线学习与课程管理平台。 themeum Tutor LMS – eLearning and online course solution 4.0.5及之前版本存在输入验证错误漏洞，该漏洞源于处理程序缺少授权且未对传递给extract()的数组键进行清理，攻击者可通过控制POST数据覆盖模板变量，导致未经身份验证的攻击者调用任意零参数PHP函数并创建持久订阅者级账户。

CVSS 6.5 · Medium EPSS 0.62% · P48

Affected Version Matrix 1

VendorProduct Version RangeStatus
themeum Tutor LMS – eLearning and online course solution ≤ 4.0.5 affected
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I. Basic Information for CVE-2026-16759

Vulnerability Information
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Vulnerability Title
Tutor LMS <= 4.0.5 - Unauthenticated Remote Code Execution via 'template' and 'data' POST Parameters
Source: CVE Program / CVE List V5
Vulnerability Description
The Tutor LMS – eLearning and online course solution plugin for WordPress is vulnerable to Remote Code Execution limited to zero-argument function invocation in all versions up to, and including, 4.0.5 via the tutor_course_filter_ajax AJAX action. This is due to missing authorization on the handler combined with unsanitized array keys being passed to extract() inside tutor_load_template(), allowing attacker-controlled POST data to overwrite the local $template variable and, in the resulting templates/single-content-loader.php template, the $method_map and $context variables invoked at $method_map[$context](). This makes it possible for unauthenticated attackers to call an arbitrary zero-argument PHP function server-side and, via WordPress core edit_user(), to create a persistent subscriber-level account from request parameters.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
输出中的特殊元素转义处理不恰当(注入)
Source: CVE Program / CVE List V5
Vulnerability Title
themeum Tutor LMS – eLearning and online course solution 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
themeum Tutor LMS – eLearning and online course solution是themeum公司的一款在线学习与课程管理平台。 themeum Tutor LMS – eLearning and online course solution 4.0.5及之前版本存在输入验证错误漏洞，该漏洞源于处理程序缺少授权且未对传递给extract()的数组键进行清理，攻击者可通过控制POST数据覆盖模板变量，导致未经身份验证的攻击者调用任意零参数PHP函数并创建持久订阅者级账户。
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
themeum Tutor LMS – eLearning and online course solution 0 ~ 4.0.5 -

II. Public POCs for CVE-2026-16759

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III. Intelligence Information for CVE-2026-16759

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Patches & Fixes for CVE-2026-16759 (3)

News Coverage for CVE-2026-16759 (1)

Other References for CVE-2026-16759 (2)

IV. Related Vulnerabilities

Same product: Tutor LMS – eLearning and online course solution
Same vendor: themeum
Same weakness: CWE-74

V. Comments for CVE-2026-16759

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