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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 Custom Contact Forms是WordPress基金会开源的一款自定义联系表单插件。 WordPress Custom Contact Forms 7.16及之前版本存在授权问题漏洞，该漏洞源于插件未正确验证用户是否有权执行操作，且嵌套的fields[].ID和choices[].ID路径缺少同等权限或文章类型检查，可能导致具有贡献者级及以上权限的已认证攻击者永久强制删除任意类型的文章（包括页面、管理员发布的文章和WooCommerce产品），并向任意文章写入任意ccf_f

CVSS 4.3 · Medium EPSS 0.49% · P41

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
outlawgt Custom Contact Forms ≤ 7.16 affected
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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
Vulnerability Title
WordPress Custom Contact Forms 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress Custom Contact Forms是WordPress基金会开源的一款自定义联系表单插件。 WordPress Custom Contact Forms 7.16及之前版本存在授权问题漏洞，该漏洞源于插件未正确验证用户是否有权执行操作，且嵌套的fields[].ID和choices[].ID路径缺少同等权限或文章类型检查，可能导致具有贡献者级及以上权限的已认证攻击者永久强制删除任意类型的文章（包括页面、管理员发布的文章和WooCommerce产品），并向任意文章写入任意ccf_f
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
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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