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.
AV AC AT PR UI VC VI VA CVSS EPSS %ile KEV N L N N N N H L 8.8 .0038 31.4 —
AFFECTED Product Versions Fixed chatwoot unspecified —
TIMELINE Jul 18 Reserved by VulnCheck Jul 23 Published (CNA: VulnCheck) Jul 24 EXPLOIT PUBLISHED — CVE-2026-63765 (chatwoot). Public exploit reference added.
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.
| Date | Event | Detail |
|---|---|---|
| July 18, 2026 | Reserved | Reserved by VulnCheck |
| July 23, 2026 | Published | Published (CNA: VulnCheck) |
| July 24, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-63765 (chatwoot). Public exploit reference added. |
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|---|---|---|---|
| chatwoot | chatwoot | — | — | — |
Authoritative record: CVE-2026-63765 at cve.org
Vendors: chatwoot
Weaknesses: CWE-306
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-63765 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.