CVE-2024-1563

State: Published
Severity: 8.1 High
Published: Feb 22, 2024
Updated: Mar 27, 2025
Reserved: Feb 15, 2024

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	8.1 High	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H	CISA-ADP

Weaknesses

CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition

Affected Products

Product	Versions
Focus for iOSMozilla	before 122Affected

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1863831
https://www.mozilla.org/security/advisories/mfsa2024-09/

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