Medium 5.4Published May 25, 2026

CVE-2026-9078Firefox iOS RTL Domain Rendering Issue in Link Preview

Updated under an hour ago (Oct 26, 2026, 11:50 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

Firefox for iOS displayed specially crafted right-to-left (RTL) and internationalized domain names (IDNs) incorrectly in link preview UI surfaces. A crafted RTL hostname could visually reorder portions of the displayed domain, causing attacker-controlled sites to appear as trusted origins. This vulnerability was fixed in Firefox for iOS 151.1.

CVSS: 5.4 MEDIUM (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/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: Undergoing Analysis
Record last updated: May 26, 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 151.1 not affected	CNA record
mozilla firefox mozilla:firefox	before 151.1	NVD

References

https://bugzilla.mozilla.org/show_bug.cgi?id=2029371permissions-required
https://www.mozilla.org/security/advisories/mfsa2026-52/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.