CVE-2026-9078
Analyzed Analyzed - Analysis Complete
Firefox for iOS link preview spoofing via RTL and IDN manipulation

Publication date: 2026-05-25

Last updated on: 2026-05-28

Assigner: Mozilla Corporation

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.
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Meta Information
Published
2026-05-25
Last Modified
2026-05-28
Generated
2026-06-15
AI Q&A
2026-05-26
EPSS Evaluated
2026-06-14
NVD
CVE-2026-9078
EUVD
EUVD-2026-31693
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
mozilla firefox to 151.1 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-451 The user interface (UI) does not properly represent critical information to the user, allowing the information - or its source - to be obscured or spoofed. This is often a component in phishing attacks.
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Executive Summary

This vulnerability involves Firefox for iOS incorrectly displaying specially crafted right-to-left (RTL) and internationalized domain names (IDNs) in the link preview user interface. An attacker could create a domain name using RTL characters that visually reorder parts of the domain, making a malicious site appear as a trusted or legitimate origin to the user.

Impact Analysis

The vulnerability can lead to users being deceived by malicious websites that appear trustworthy due to the manipulated display of domain names. This can result in phishing attacks, where users might disclose sensitive information or credentials to attacker-controlled sites.

Mitigation Strategies

To mitigate this vulnerability, update Firefox for iOS to version 151.1 or later, where the issue has been fixed.

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