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Vulnerability record · CVE-2024-0605 · published 22 January 2024

CVE-2024-0605: Mozilla firefox focus race condition vulnerability

Mozilla · Firefox Focus

Using a javascript: URI with a setTimeout race condition, an attacker can execute unauthorized scripts on top origin sites in urlbar. This bypasses security measures, potentially leading to arbitrary code execution or unauthorized actions within the user's loaded webpage. This vulnerability affects Focus for iOS < 122.

7.5 CVSS 3.1 High EPSS 0.39% · top 69.8% CWE-362 · Race condition
7.5CVSS 3.1 base score
0.39%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

Using a javascript: URI with a setTimeout race condition, an attacker can execute unauthorized scripts on top origin sites in urlbar. This bypasses security measures, potentially leading to arbitrary code execution or unauthorized actions within the user's loaded webpage. This vulnerability affects Focus for iOS < 122.

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://bugzilla.mozilla.org/show_bug.cgi?id=1855575 Issue TrackingPermissions Required
https://www.mozilla.org/security/advisories/mfsa2024-03/ Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1855575 Issue TrackingPermissions Required
https://www.mozilla.org/security/advisories/mfsa2024-03/ Vendor Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2024-0605), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.