---
id: CVE-2023-49060
title: >-
  An attacker could have accessed internal pages or data by ex-filtrating a
  security key from ReaderMode via the `referrerpolicy` attribute
summary: >-
  An attacker could have accessed internal pages or data by ex-filtrating a
  security key from ReaderMode via the `referrerpolicy` attribute. This
  vulnerability affects Firefox for iOS < 120.
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
vendor: mozilla
product: firefox_mobile
affected:
  - firefox_mobile < 120.0
patched:
  - firefox_mobile 120.0
published: '2023-11-21'
updated: '2026-08-19'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2023-49060'
references:
  - url: 'https://bugzilla.mozilla.org/show_bug.cgi?id=1861405'
    label: security@mozilla.org
  - url: 'https://www.mozilla.org/security/advisories/mfsa2023-51/'
    label: security@mozilla.org
  - url: 'https://bugzilla.mozilla.org/show_bug.cgi?id=1861405'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://www.mozilla.org/security/advisories/mfsa2023-51/'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.0064
epssPercentile: 0.49284
ingestedAt: '2026-08-19T15:41:16.056Z'
---

## Overview

An attacker could have accessed internal pages or data by ex-filtrating a security key from ReaderMode via the `referrerpolicy` attribute. This vulnerability affects Firefox for iOS < 120.

## Affected

- `firefox_mobile < 120.0`

## Remediation

Upgrade past the affected range:

- `firefox_mobile 120.0`