CVE-2025-3035: Mozilla Firefox

Medium severity, CVSS 5.3. EPSS: 0.3% chance of exploitation in the next 30 days.

By first using the AI chatbot in one tab and later activating it in another tab, the document title of the previous tab would leak into the chat prompt. This vulnerability was fixed in Firefox 137.

Affected products

• Mozilla Firefox: before 137.0 (fixed in 137.0)

Published 2025-04-01. Last modified 2026-09-30.