HIGHVulnerability
Verified
Global

NVD HIGH: CVE-2026-63765 — Chatwoot before 4.16.0 contains an authentication bypass vulnerability in the di...

·Source: NIST NVD

Updated:

Executive Summary

Chatwoot before 4.16.0 contains an authentication bypass vulnerability in the direct uploads controller that allows unauthenticated attackers to create arbitrary ActiveStorage blobs in any tenant account. Attackers can exploit missing authentication checks to resolve any account and conversation, then obtain signed PUT URLs to write arbitrary data to the application's storage backend.

Analysis

Chatwoot before 4.16.0 contains an authentication bypass vulnerability in the direct uploads controller that allows unauthenticated attackers to create arbitrary ActiveStorage blobs in any tenant account. Attackers can exploit missing authentication checks to resolve any account and conversation, then obtain signed PUT URLs to write arbitrary data to the application's storage backend. CVSS Score: 8.2. Published: 2026-07-23T19:17:03.560.

Indicators of Compromise (1)

CVE (1)
CVE-2026-63765
NVDMITRE CVE
Source Attribution

Originally published by NIST NVD on Jul 23, 2026. Verified by: NIST.

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