CVE-2025-65203: Keepassxc Keepassxc-Browser

High severity, CVSS 7.1. EPSS: 0.1% chance of exploitation in the next 30 days.

KeePassXC-Browser thru 1.9.9.2 autofills or prompts to fill stored credentials into documents rendered under a browser-enforced CSP directive and iframe attribute sandbox, allowing attacker-controlled script in the sandboxed document to access populated form fields and exfiltrate credentials.

Affected products

• Keepassxc Keepassxc-Browser: up to and including 1.9.9.2

Published 2025-12-17. Last modified 2026-06-17.