CVE-2026-3837: Frappe

Medium severity, CVSS 5.4. EPSS: 0.3% chance of exploitation in the next 30 days.

An authenticated attacker can persist crafted values in multiple field types and trigger client-side script execution when another user opens the affected document in Desk. The vulnerable formatter implementations interpolate stored values into raw HTML attributes and element content without escaping This issue affects Frappe: 16.10.0.

Affected products

• Frappe Frappe: version 16.10.0 only

Published 2026-04-22. Last modified 2026-06-17.