Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
Unknown Chat Widget: Floating Customer Support Button for 30+ Channels, Supporting SMS, Calls, and Chat — Bit Assist < 1.8.2 - Unauthenticated Arbitrary File Upload via Response Endpoint
AV AC PR UI S C I A CVSS EPSS %ile KEV
N L N N U N L L 6.5 .0026 17.3 —
AFFECTED
Product Versions Fixed
Chat Widget: Floating Customer Support Button for 30+ Channels, Supporting SMS, Calls, and Chat unspecified —
TIMELINE
Jul 22 Reserved by WPScan
Aug 4 Published (CNA: WPScan)
Aug 10 EXPLOIT PUBLISHED — CVE-2026-16548 (Unknown Chat Widget: Floating Customer Support Button for 30+ Channels, Supporting SMS, Calls, and Chat). Public exploit reference added.
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.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
|---|
| July 22, 2026 | Reserved | Reserved by WPScan |
| August 4, 2026 | Published | Published (CNA: WPScan) |
| August 10, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-16548 (Unknown Chat Widget: Floating Customer Support Button for 30+ Channels, Supporting SMS, Calls, and Chat). Public exploit reference added. |
Affected
Affected products and packages — 1 row
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| Unknown | Chat Widget: Floating Customer Support Button for 30+ Channels, Supporting SMS, Calls, and Chat | — | — | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-16548 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.