What is CVE-2024-31393?

CVE-2024-31393 is a medium-severity vulnerability in Apple Iphone OS. CVSS score: 4.3/10. Published 2024-04-03.

How severe is CVE-2024-31393?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Vulnerability in Apple Iphone OS

CVE-2024-31393

Dragging Javascript URLs to the address bar could cause them to be loaded, bypassing restrictions and security protections This vulnerability affects Firefox for iOS < 124.

Published 2024-04-03 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.003 (23.8th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 24th percentile — 23.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Apple Iphone OS
Mozilla Firefox
Mozilla Firefox For iOS — versions unspecified

References

bugzilla.mozilla.org/show_bug.cgi (Issue Tracking)
www.mozilla.org/security/advisories/mfsa2024-17/ (Vendor Advisory)

Frequently asked questions

What is CVE-2024-31393?: CVE-2024-31393 is a medium-severity vulnerability in Apple Iphone OS. CVSS score: 4.3/10. Published 2024-04-03.
How severe is CVE-2024-31393?: Medium severity. CVSS v3 base score is 4.3 out of 10.