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CVE-2026-75018— Custom Contact Forms <= 7.16 - Missing Authorization to Authenticated (Contributor+) Arbitrary Post Deletion and Post Meta Modification via Nested 'fields[].ID' / 'choices[].ID' Parameters

Quick assessment

Affected
outlawgt Custom Contact Forms
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 Custom Contact Forms 插件在所有版本中（包括 7.16 及更早版本）均存在授权绕过漏洞。这是由于插件未正确验证用户是否拥有执行特定操作的权限所致。该漏洞使得拥有“贡献者”（Contributor）或更高权限的已认证攻击者能够永久强制删除任意类型的文章（包括页面、管理员创建的文章以及 WooCommerce 产品），并且可以在任意文章上写入任意 文章元数据，无论其所有权或文章类型如何。虽然顶层表单 ID 通过 / 能力进行检查，但由 和 处理的嵌套 和 路径却缺乏同等的能力

CVSS 4.3 · Medium

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-75018

Vulnerability Information
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Vulnerability Title
Custom Contact Forms <= 7.16 - Missing Authorization to Authenticated (Contributor+) Arbitrary Post Deletion and Post Meta Modification via Nested 'fields[].ID' / 'choices[].ID' Parameters
Source: CVE Program / CVE List V5
Vulnerability Description
The Custom Contact Forms plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 7.16. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with contributor-level access and above, to permanently force-delete arbitrary posts of any post type (including pages, administrator-authored posts, and WooCommerce products) and write arbitrary ccf_field_* post meta onto any post regardless of ownership or post type. The top-level form ID is checked via edit_post/publish_posts, but the nested fields[].ID and choices[].ID paths processed by _create_and_map_fields() and _create_and_map_choices() carry no equivalent capability or post-type guard, leaving those sinks fully exposed while delete_item() and delete_submission() contain explicit post-type restriction fixes demonstrating the developer's awareness of scoping requirements.
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
outlawgt Custom Contact Forms 0 ~ 7.16 -

II. Public POCs for CVE-2026-75018

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III. Intelligence Information for CVE-2026-75018

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Patches & Fixes for CVE-2026-75018 (1)

Vendor Pages for CVE-2026-75018 (1)

IV. Related Vulnerabilities

Same weakness: CWE-862

V. Comments for CVE-2026-75018

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