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.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-05-25

Last Modified

2026-05-28

Generated

2026-07-06

AI Q&A

2026-05-26

EPSS Evaluated

2026-07-04

NVD

CVE-2026-9078

EUVD

EUVD-2026-31693

Affected Vendors & Products

Vendor	Product	Version / Range
mozilla	firefox	to 151.1 (exc)

Helpful Resources

Exploitability

CWE

KEV

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.

Attack-Flow Graph

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.

Hi! I’m here to help you understand CVE-2026-9078. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70