VULNERABILITY INTELLIGENCE
CVE-2026-63765
CVSS score8.2 HIGH
EPSS probability0.70%
CISA KEVNot currently listed
Published2026-07-23
Last modified2026-09-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L
Description
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.
Weakness classification
- disclosure@vulncheck.com: CWE-306