CVE-2026-78175— WordPress Tutor LMS 反序列化注入漏洞
一分钟漏洞结论
影响对象
themeum Tutor LMS – eLearning and online course solution
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
WordPress Tutor LMS是WordPress基金会开源的一款在线学习管理系统。 WordPress Tutor LMS 4.0.7及之前版本存在反序列化注入漏洞，该漏洞源于tutor_save_withdraw_account AJAX处理程序中的withdraw_method_field参数缺乏权限或角色检查，仅依赖nonce，且esc_sql()替换%字符后序列化存储与取回时长度声明不一致，导致unserialize()过度读取攻击者可控字节并注入任意序列化对象流，可能使订阅者及以上权限
可能的 ATT&CK 技术 1 AI
T1190 · Exploit Public-Facing Application影响版本矩阵 1
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| themeum | Tutor LMS – eLearning and online course solution | ≤ 4.0.7 |
affected |
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一、 漏洞 CVE-2026-78175 基础信息
漏洞信息
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Vulnerability Title
Tutor LMS <= 4.0.7 - Authenticated (Subscriber+) PHP Object Injection to Remote Code Execution
来源: CVE Program / CVE List V5
Vulnerability Description
The Tutor LMS – eLearning and online course solution plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 4.0.7 via the `withdraw_method_field` parameter of the `tutor_save_withdraw_account` AJAX handler. This is due to the handler lacking any capability or role check, relying solely on a nonce, while also passing attacker-supplied values through `esc_sql()`, which replaces every `%` character with a 66-byte HMAC placeholder token before the data is serialized and stored via `update_user_meta()`; when the meta is later retrieved, the placeholder is collapsed back to a single `%`, leaving serialized string length declarations 65 bytes greater than the actual content, and because array keys originate from entirely unescaped POST field names, `unserialize()` over-reads into attacker-controlled bytes, allowing injection of an arbitrary serialized object stream. This makes it possible for authenticated attackers, with subscriber-level access and above, to achieve remote code execution on the server by triggering the `GuzzleHttp\Cookie\FileCookieJar` POP chain, reachable via the `spl_autoload_register` loader in `TUTOR\RestAPI` which loads the plugin's own bundled PayPal Composer autoloader, writing attacker-controlled content to an attacker-specified filename. This has an unauthenticated pathway when user registration is enabled, which is common for students and teachers to register, and it requires the monetization feature to be enabled.
来源: 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
来源: CVE Program / CVE List V5
Vulnerability Type
可信数据的反序列化
来源: CVE Program / CVE List V5
Vulnerability Title
WordPress Tutor LMS 反序列化注入漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
WordPress Tutor LMS是WordPress基金会开源的一款在线学习管理系统。 WordPress Tutor LMS 4.0.7及之前版本存在反序列化注入漏洞，该漏洞源于tutor_save_withdraw_account AJAX处理程序中的withdraw_method_field参数缺乏权限或角色检查，仅依赖nonce，且esc_sql()替换%字符后序列化存储与取回时长度声明不一致，导致unserialize()过度读取攻击者可控字节并注入任意序列化对象流，可能使订阅者及以上权限
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD
受影响产品
| 厂商 | 产品 | 影响版本 | CPE | 订阅 |
|---|---|---|---|---|
| themeum | Tutor LMS – eLearning and online course solution | 0 ~ 4.0.7 | - |
|
二、漏洞 CVE-2026-78175 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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