Medium 6.3Published Jul 6, 2026

CVE-2026-13356Interrupted navigation could allow address bar origin spoofing in Firefox for iOS

Updated under an hour ago (Oct 27, 2026, 2:00 AM ET)

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It affects Mozilla Firefox for iOS and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Mozilla Firefox for iOS

Exploited in the last 30 days

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.

CVSS: 6.3 MEDIUM (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
Weakness (CWE): CWE-451
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: mozilla
NVD analysis: Analyzed
Record last updated: Jul 7, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Mozilla Firefox for iOS mozilla:firefox_for_ios (from the name)	from 152.3 not affected	CNA record
mozilla firefox mozilla:firefox	before 152.3	NVD

References

References

https://bugzilla.mozilla.org/show_bug.cgi?id=2047768	permissions-required
https://www.mozilla.org/security/advisories/mfsa2026-65/	vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.