CVE-2026-13356

medium

Description

A malicious webpage could interrupt a pending navigation by enqueuing a synchronous JavaScript dialog, causing the browser UI to display the destination origin in the address bar while continuing to render attacker-controlled content. This vulnerability was fixed in Firefox for iOS 152.3.

References

https://www.mozilla.org/security/advisories/mfsa2026-65/

https://bugzilla.mozilla.org/show_bug.cgi?id=2047768

Details

Source: Mitre, NVD

Published: 2026-07-07

Updated: 2026-07-08

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 6.3

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

Severity: Medium

EPSS

EPSS: 0.00146