CVE-2024-1563

8.1 highEPSS 0.4%

High (8.1) in mozilla firefox focus. EPSS 0.4% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

8.1 high

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

EPSS: 0.4% chance of exploitation in the next 30 days; higher than 32% of CVEs (scores of 2026-10-31)
CWE: CWE-367
Published: 2024-02-22
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

mozilla:firefox_focus

References

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

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