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CVE-2026-15309— CourseCure Courses <= 1.5.1 - Authenticated (Subscriber+) Privilege Escalation to 'ajax_save_settings' Endpoint

Quick assessment

Affected
WishList Member CourseCure Courses
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 的 CourseCure Courses 插件在 1.5.1 及更早版本中存在权限提升漏洞。该漏洞源于 函数中缺少能力检查：该函数接受任意的 POST 参数，并在未进行任何授权验证的情况下，使用攻击者可控的键和值调用 。这使得拥有订阅者（Subscriber）及以上权限的已认证攻击者，能够将 选项设置为 ，并将 设置为 ，随后注册新账户并自动获得完整的管理员权限，从而实现从低权限到管理员权限的提升。

CVSS 8.8 · High

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation
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I. Basic Information for CVE-2026-15309

Vulnerability Information
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Vulnerability Title
CourseCure Courses <= 1.5.1 - Authenticated (Subscriber+) Privilege Escalation to 'ajax_save_settings' Endpoint
Source: CVE Program / CVE List V5
Vulnerability Description
The CourseCure Courses plugin for WordPress is vulnerable to Privilege Escalation in versions up to, and including, 1.5.1. This is due to a missing capability check in the ajax_save_settings() function, which accepts arbitrary POST parameters and calls update_option() with attacker-controlled keys and values without any authorization verification. This makes it possible for authenticated attackers, with subscriber-level access and above, to elevate their privileges to administrator by setting the default_role WordPress option to 'administrator' and users_can_register to '1', then registering a new account that is automatically granted full administrator access.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
特权管理不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
WishList Member CourseCure Courses 0 ~ 1.5.1 -

II. Public POCs for CVE-2026-15309

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III. Intelligence Information for CVE-2026-15309

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Other References for CVE-2026-15309 (2)

IV. Related Vulnerabilities

Same vendor: WishList Member
Same weakness: CWE-269