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CVE-2026-16548— Bit Assist < 1.8.2 - Unauthenticated Arbitrary File Upload via Response Endpoint

Quick assessment

Affected
Unknown Chat Widget: Floating Customer Support Button for 30+ Channels, Supporting SMS, Calls, and Chat
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 Chat Widget是WordPress基金会开源的一款网站聊天组件。 WordPress Chat Widget 1.8.2之前版本存在任意文件上传漏洞，该漏洞源于未验证提交到公共响应端点的文件的类型、扩展名、内容或大小，并将文件存储在uploads目录下，可能导致未经身份验证的用户上传任意文件，影响限于磁盘消耗和内容托管。

AI Predicted 5.3 Difficulty: Easy EPSS 0.43% · P35

Possible ATT&CK Techniques 2 AI

T1195 · Supply Chain Compromise T1508

Affected Version Matrix 1

VendorProduct Version RangeStatus
Unknown Chat Widget: Floating Customer Support Button for 30+ Channels, Supporting SMS, Calls, and Chat < 1.8.2 affected
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I. Basic Information for CVE-2026-16548

Vulnerability Information
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Vulnerability Title
Bit Assist < 1.8.2 - Unauthenticated Arbitrary File Upload via Response Endpoint
Source: CVE Program / CVE List V5
Vulnerability Description
The Chat Widget: Floating Customer Support Button for 30+ Channels, Supporting SMS, Calls, and Chat WordPress plugin before 1.8.2 does not validate the type, extension, content, or size of files submitted to its public response endpoint and stores them under the uploads directory, so an unauthenticated user can upload arbitrary files. The original extension is discarded (files are stored under a bare UUID), so this does not yield code execution or stored XSS; impact is bounded to disk consumption and content hosting. The storing path requires the channel's response storage or mail-forwarding to be configured.
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
Vulnerability Title
WordPress Chat Widget 任意文件上传漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress Chat Widget是WordPress基金会开源的一款网站聊天组件。 WordPress Chat Widget 1.8.2之前版本存在任意文件上传漏洞，该漏洞源于未验证提交到公共响应端点的文件的类型、扩展名、内容或大小，并将文件存储在uploads目录下，可能导致未经身份验证的用户上传任意文件，影响限于磁盘消耗和内容托管。
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
Unknown Chat Widget: Floating Customer Support Button for 30+ Channels, Supporting SMS, Calls, and Chat 0 ~ 1.8.2 -

II. Public POCs for CVE-2026-16548

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III. Intelligence Information for CVE-2026-16548

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Vendor Advisories for CVE-2026-16548 (1)

Same Patch Batch · Unknown · 2026-08-04 · 24 CVEs total

CVE-2026-16035 miniOrange 2FA < 6.2.7 - Subscriber+ Arbitrary-Recipient OTP Send
CVE-2026-16618 ImproveSEO <= 2.0.11 - Unauthenticated Arbitrary File Upload Leading to Remote Code Execut
CVE-2026-10526 EmbedPress < 4.6.1 - Unauthenticated Blind SSRF
CVE-2026-11366 MonsterInsights < 11.1.0 - Unauthenticated Measurement Protocol Secret Update via Empty-Ke
CVE-2026-16536 Simple Google Calendar Outlook Events Widget < 3.1.0 - Unauthenticated SSRF via calendar_i
CVE-2026-16623 Create Block Theme < 2.10.0 - Admin+ PHP Code Injection via Pattern Save (Multisite)
CVE-2026-12698 wpForo Forum < 3.1.3 - Subscriber+ Account Status and Reputation Manipulation via Profile
CVE-2026-14939 Visualizer: Tables and Charts Manager < 4.0.6 - Contributor+ Server-Side Request Forgery v
CVE-2026-14816 The GDPR Framework < 2.4.0 - Unauthenticated Consent Record Forgery and Do Not Sell Reques
CVE-2026-14872 Database for Contact Form 7, WPforms, Elementor forms < 1.5.5 - Authenticated SQL Injectio
CVE-2026-14824 Quiz And Survey Master < 11.2.2 - Contributor+ Stored XSS via Polar Question
CVE-2026-14848 Paid Member Subscriptions < 3.0.8 - Subscriber+ Cross-User Subscription Hijack via process
CVE-2026-16296 Clearfy < 2.4.3 - Open Redirect via Cyrlitera 404 Handler
CVE-2026-16056 Contest Gallery < 30.0.7 - Subscriber+ OpenAI Prompt History Disclosure via post_cg_get_op
CVE-2026-15233 Nested Pages < 3.2.15 - Editor+ Stored XSS via Post Title
CVE-2026-15958 Easy Dropbox Integration < 2.2.0 - Unauthenticated Arbitrary Connected Dropbox File Access
CVE-2026-16293 Blubrry PowerPress < 11.16.11 - Contributor+ Stored XSS via Podcast Episode Chapters URL
CVE-2026-16068 Brizy - Page Builder < 2.8.19 - Author+ Stored XSS via brizy_set_project Global Project Co
CVE-2026-16069 Brizy - Page Builder < 2.8.19 - Contributor+ Stored XSS via Featured Image Focal Point
CVE-2026-16070 Brizy - Page Builder < 2.8.19 - Contributor+ Template Type Update via IDOR

Showing top 20 of 24 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same vendor: Unknown

V. Comments for CVE-2026-16548

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