---
id: CVE-2025-3035
title: >-
  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
summary: >-
  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.
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'
cwe:
  - CWE-359
vendor: mozilla
product: firefox
affected:
  - firefox < 137.0
patched:
  - firefox 137.0
published: '2025-04-01'
updated: '2026-09-30'
sourceUpdated: '2026-09-30T19:10:01.007'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-3035'
references:
  - url: 'https://bugzilla.mozilla.org/show_bug.cgi?id=1952268'
    label: security@mozilla.org
  - url: 'https://www.mozilla.org/security/advisories/mfsa2025-20/'
    label: security@mozilla.org
tags:
  - nvd
epss: 0.00286
epssPercentile: 0.19027
ingestedAt: '2026-09-30T19:21:07.232Z'
---

## Overview

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

- `firefox < 137.0`

## Remediation

Upgrade past the affected range:

- `firefox 137.0`