medium4.8
CVE-2026-79670
Ech0 before 4.4.3 contains a stored cross-site scripting vulnerability in the file upload endpoint that validates Content-Type using only client-supplied heade…
Impact
Ech0 before 4.4.3 contains a stored cross-site scripting vulnerability in the file upload endpoint that validates Content-Type using only client-supplied headers without server-side inspection. Attackers with admin privileges can upload SVG or HTML files containing JavaScript that executes in the application origin when accessed by any user, enabling session hijacking and data exfiltration.
Affected products
| Product | Affected versions |
|---|---|
| Ech0 | before 4.4.3 |
Versions were read from the advisory text. No structured product data has been published for this record yet.