---
id: CVE-2022-31746
title: >-
  Internal URLs are protected by a secret UUID key, which could have been leaked
  to web page through the Referrer header
summary: >-
  Internal URLs are protected by a secret UUID key, which could have been leaked
  to web page through the Referrer header. This vulnerability affects Firefox
  for iOS < 102.
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N'
cwe:
  - CWE-200
  - CWE-200
vendor: mozilla
product: firefox_mobile
affected:
  - firefox_mobile < 102.0
patched:
  - firefox_mobile 102.0
published: '2022-12-22'
updated: '2026-08-19'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2022-31746'
references:
  - url: 'https://bugzilla.mozilla.org/show_bug.cgi?id=1654416'
    label: security@mozilla.org
  - url: 'https://www.mozilla.org/security/advisories/mfsa2022-27/'
    label: security@mozilla.org
  - url: 'https://bugzilla.mozilla.org/show_bug.cgi?id=1654416'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://www.mozilla.org/security/advisories/mfsa2022-27/'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://bugzilla.mozilla.org/show_bug.cgi?id=1654416'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
epss: 0.00412
epssPercentile: 0.35245
ingestedAt: '2026-08-19T15:41:15.300Z'
---

## Overview

Internal URLs are protected by a secret UUID key, which could have been leaked to web page through the Referrer header. This vulnerability affects Firefox for iOS < 102.

## Affected

- `firefox_mobile < 102.0`

## Remediation

Upgrade past the affected range:

- `firefox_mobile 102.0`