CVE-2026-9078

5.4 MEDIUM

Firefox for iOS displayed specially crafted right-to-left (RTL) and internationalized domain names (IDNs) incorrectly in link preview UI ...

Published: 2026-05-25 · Last updated: 2026-05-28

Severity and scoring

CVSS: 5.4 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L
CWE: CWE-451

Affected products

Vendor	Product
mozilla	firefox

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.

Source: NVD

References

[NVD]https://nvd.nist.gov/vuln/detail/CVE-2026-9078
[Other]https://bugzilla.mozilla.org/show_bug.cgi?id=2029371
[Vendor advisory]https://www.mozilla.org/security/advisories/mfsa2026-52/

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