Quick answers
- Is CVE-2026-9078 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-9078 being exploited in the wild.
- How severe is CVE-2026-9078?
- Informational severity, published 25 May 2026.
- Which products and versions are affected?
- Mozilla Firefox for iOS versions prior to 151.1.
- Is there a fix for CVE-2026-9078?
- A patch was published on 2026-05-25: Fixed in Firefox for iOS 151.1 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-9078 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-9078?
- Check whether you run Mozilla Firefox for iOS at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A domain name spoofing vulnerability exists in Firefox for iOS due to improper handling of Right-to-Left (RTL) characters and Internationalized Domain Names (IDNs) within the link preview UI. By crafting a specific hostname using RTL characters, an attacker can trigger a visual reordering of the domain string. This allows an attacker-controlled domain to be displayed as a trusted origin to the user. This is a UI spoofing flaw that requires a user to interact with or view a malicious link. The issue is resolved in Firefox for iOS version 151.1.
Affected products
- Mozilla Firefox for iOS versions prior to 151.1
Timeline
- 2026-05-25: advisory: Mozilla Foundation Security Advisory 2026-52 released
- 2026-05-25: patched: Fixed in Firefox for iOS 151.1