Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-86834— MetForm 2.2.1 - 4.3.0 - Unauthenticated Debug File Disclosure via HubSpot Forms Integration

Quick assessment

Affected
Unknown MetForm
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 MetForm WordPress 插件 4.3.1 之前的版本中，当启用 HubSpot Forms 集成时，该插件会在每次表单提交时向网站根目录写入一个调试文件，但未能正确限制对该文件的访问权限。这种缺陷使得未经身份验证的攻击者能够读取上游 API 的响应数据，包括关联标识符和 Cookie。

AI Predicted 5.3 Difficulty: Easy EPSS 0.14% · P3
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-86834

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
MetForm 2.2.1 - 4.3.0 - Unauthenticated Debug File Disclosure via HubSpot Forms Integration
Source: CVE Program / CVE List V5
Vulnerability Description
The MetForm WordPress plugin before 4.3.1 does not properly restrict access to a debug file it writes to the web root on every form submission when its HubSpot Forms integration is enabled, allowing unauthenticated attackers to read upstream API response data, including correlation identifiers and cookies.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Unknown MetForm 2.2.1 ~ 4.3.1 -

II. Public POCs for CVE-2026-86834

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-86834

请登录查看更多情报信息。

Other References for CVE-2026-86834 (1)

Same Patch Batch · Unknown · 2026-10-03 · 21 CVEs total

CVE-2026-85015 Unlimited Elements For Elementor < 2.0.21 - Authenticated Arbitrary File Write via Path Tr
CVE-2026-101159 WP Ultimate Review < 2.4.4 - Unauthenticated Stored XSS via Review Submission
CVE-2026-101160 WP Ultimate Review < 2.4.4 - Unauthenticated DoS via Non-Numeric Review Rating
CVE-2026-80518 WP Ultimate CSV Importer < 9.2 - Unauthenticated Imported Data Disclosure via Predictable
CVE-2026-80517 WP Ultimate CSV Importer 7.17 - 9.1 - Admin+ Stored XSS via ZIP Import SVG Upload
CVE-2026-101161 WP Ultimate Review < 2.4.4 - Unauthenticated DoS via Unset Display Settings in wp-reviews
CVE-2026-101162 WP Ultimate Review < 2.4.4 - Author+ Stored XSS via Review Overview Settings
CVE-2026-103293 MPG < 4.2.3 - Editor+ Arbitrary File Read via Project Import
CVE-2026-103514 WP 2FA < 4.1.0 - Two-Factor Authentication Bypass via TOTP Code Replay
CVE-2026-86832 MetForm < 4.3.1 - Unauthenticated Form Entry Data Disclosure via REST API
CVE-2026-94238 Loco Translate < 2.8.9 - Translator+ Limited File Read via 'path' Parameter
CVE-2026-85568 Unlimited Elements For Elementor 1.5.139 - 2.0.20 - Unauthenticated SQLi via 'ucs' Paramet
CVE-2026-91078 TillKit < 1.0.5 - Unauthenticated POS Takeover via Hard-Coded Default Manager PIN
CVE-2026-88782 Kubio AI Page Builder < 2.9.3 - Contributor+ Stored XSS via Image Gallery Item URL Attribu
CVE-2026-88783 Kubio AI Page Builder < 2.9.3 - Unauthenticated Stored XSS via Comment Content
CVE-2026-92437 Mailchimp for WooCommerce < 6.3 - Unauthenticated Abandoned Cart Modification and Deletion
CVE-2026-89236 SaveTo Wishlist Lite < 1.1.5 - Unauthenticated SQLi via 'sort_column' and 'sort_order' Par
CVE-2026-96962 Pie Register < 3.8.4.14 - Unauthenticated User Email Disclosure via Invitation Code
CVE-2026-92923 Unlimited Elements For Elementor 1.5.142 - 2.0.20 - Subscriber+ SQLi via get_addon_output_
CVE-2026-94239 Loco Translate < 2.8.9 - Translator+ Stored XSS via Bundle Configuration

IV. Related Vulnerabilities

Same product: MetForm
Same vendor: Unknown

V. Comments for CVE-2026-86834

No comments yet

Leave a comment