Bit Assist < 1.8.2 - Unauthenticated Arbitrary File Upload via Response Endpoint (CVE-2026-16548) | HOL Guard CVE

Medium · CVSS 5.4CVE-2026-16548

Bit Assist < 1.8.2 - Unauthenticated Arbitrary File Upload via Response Endpoint

Answer in brief

CVE-2026-16548 records a Medium severity (CVSS 5.4) vulnerability in Bit Assist < 1.8.2 - Unauthenticated Arbitrary File Upload via Response Endpoint. The current sources do not mark it as known exploited. The current feed maps Unknown/Chat Widget: Floating Customer Support Button for 30+ Channels, Supporting SMS, Calls, and Chat (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 4, 2026Updated Aug 26, 2026Source checked Sep 19, 2026First seen by HOL Aug 4, 2026Material review Aug 26, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 5.4
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 5.4. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Unknown/Chat Widget: Floating Customer Support Button for 30+ Channels, Supporting SMS, Calls, and Chat (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Unknown/Chat Widget: Floating Customer Support Button for 30+ Channels, Supporting SMS, Calls, and Chatgeneric	>=0 <1.8.2	1.8.2

Recommended response

Check inventory. Check lockfiles and deployed manifests for Unknown/Chat Widget: Floating Customer Support Button for 30+ Channels, Supporting SMS, Calls, and Chat.
Review the reported fix. Update Unknown/Chat Widget: Floating Customer Support Button for 30+ Channels, Supporting SMS, Calls, and Chat to 1.8.2 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 4, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 26, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 4, 2026

Sources and claim methodology

Source referencewpscan.com

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.