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CVE-2026-125745— WCK before 2.4.1 Missing Authorization via wck_show_update_form AJAX

Quick assessment

Affected
madalinungureanu Custom Post Types and Custom Fields creator – WCK
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 2.4.1 版本之前，自定义文章类型与自定义字段创建器（WCK）存在一个缺少权限校验的漏洞。该漏洞允许已认证的攻击者，只要能够访问任意 WCK 元数据框（meta box），即可通过利用 AJAX 处理器读取其无权编辑的文章中的自定义字段值。该处理器未执行其他处理器所实施的权限检查，且依赖一个共享且非唯一的 nonce 操作标识。攻击者可构造一个指向 的请求，携带有效的 nonce、目标元数据键（meta key）以及任意文章 ID，从而泄露属于其他用户的敏感文章元数据或选项值，包括私密或草稿文章的数据。

CVSS 4.3 · Medium

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation
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I. Basic Information for CVE-2026-125745

Vulnerability Information
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Vulnerability Title
WCK before 2.4.1 Missing Authorization via wck_show_update_form AJAX
Source: CVE Program / CVE List V5
Vulnerability Description
Custom Post Types and Custom Fields creator (WCK) before 2.4.1 contains a missing authorization vulnerability that allows authenticated attackers with access to any WCK meta box to read custom-field values on posts they cannot edit by exploiting the wck_show_update_form AJAX handler, which lacks the capability checks enforced by other handlers and relies on a shared, non-unique nonce action. Attackers can send a crafted admin-ajax.php request with a valid wck-edit-entry nonce, a target meta key, and an arbitrary post ID to disclose sensitive post-meta or option values belonging to other users, including private or draft post data.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
madalinungureanu Custom Post Types and Custom Fields creator – WCK 0 ~ 2.4.1 -

II. Public POCs for CVE-2026-125745

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III. Intelligence Information for CVE-2026-125745

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Other References for CVE-2026-125745 (2)

IV. Related Vulnerabilities

Same weakness: CWE-862