CVE-2026-9078
Firefox iOS RTL Domain Rendering Issue in Link Preview
5.4CVSSMEDIUM
Description
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 Vector Breakdown
Exploitability
AV:NAttack VectorNetwork
AC:LAttack ComplexityLow
PR:NPrivileges RequiredNone
UI:RUser InteractionRequired
Scope
S:UScopeUnchanged
Impact
C:LConfidentialityLow
I:NIntegrityNone
A:LAvailabilityLow
Weaknesses
Affected Products
Exploitability
Official Patch Available
References
https://bugzilla.mozilla.org/show_bug.cgi?id=2029371
bugzilla.mozilla.org
https://www.mozilla.org/security/advisories/mfsa2026-52/
mozilla.org
https://www.mozilla.org/en-US/security/advisories/mfsa2026-52/
mozilla.org
and 1 more references View all →
Timeline
Published
May 25, 2026
Last Updated
May 28, 2026
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