TI-2024-01459 Aliases CVE-2024-1563 GHSA-783m-f4c2-pgqr

Time-of-check time-of-use race condition in Mozilla Focus for iOS

LOW 35CWE-367Published 2024-02-22 · Updated 2025-03-27

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: High
Impact type: —
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.

Summary

An attacker could have executed unauthorized scripts on top origin sites using a JavaScript URI when opening an external URL with a custom Firefox scheme and a timeout race condition. This vulnerability affects Focus for iOS < 122.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00387 33rd percentileScored 2026-11-07

Fix Fixed Focus for iOS (Mozilla): 122

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Mozilla	Focus for iOS	before 122	122	Patch available	CNA

Focus for iOS VendorMozilla Affected before 122 Fixed in 122 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:mozilla:firefox_focus::::::iphone_os::*	before 122.0	Vulnerable	Mozilla

cpe:2.3:a:mozilla:firefox_focus:*:*:*:*:*:iphone_os:*:* Versions before 122.0 Vulnerable ·Mozilla

Remediation

Fix · CNA Focus for iOS (Mozilla) Fixed in 122

Timeline

2026-10-02 Threatist record created from CVE-2024-1563
2026-10-03 Alias added: GHSA-783m-f4c2-pgqr

References

Advisory 1

https://www.mozilla.org/security/advisories/mfsa2024-09/

Other 1

https://bugzilla.mozilla.org/show_bug.cgi?id=1863831

TI-2022-09832 Use after free in Mozilla Firefox KEVCVSS 3.1CRITICAL 9.6
TI-2022-09831 Use after free in Mozilla Firefox KEVCVSS 3.1HIGH 8.8
TI-2023-11015 Authentication bypass by spoofing in Mozilla Firefox CVSS 3.1HIGH 7.5
TI-2025-34723 Passkey phishing within Bluetooth range CVSS 3.1CRITICAL 9.8
TI-2023-13902 Different techniques existed to obscure the fullscreen notification in Firefox and Focus… CVSS 3.1CRITICAL 9.1
TI-2024-09702 Improper authentication in Mozilla Focus for iOS CVSS 3.1CRITICAL 9.1

See all 19 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences