CVE-2026-9078

MEDIUM 5.4

Firefox iOS RTL Domain Rendering Issue in Link Preview

CVSS Score

5.4

EPSS Score

0.0%

EPSS Percentile

5th

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.

Vendor	mozilla
Product	firefox for ios
Ecosystems	Browser JavaScript
Industries	Technology
Published	May 25, 2026
Last Updated	May 26, 2026

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Affected Versions

Mozilla / Firefox for iOS

All versions affected

References

NVD ↗ CVE.org ↗ EPSS Data ↗

bugzilla.mozilla.org: https://bugzilla.mozilla.org/show_bug.cgi?id=2029371 mozilla.org: https://www.mozilla.org/security/advisories/mfsa2026-52/

Credits

Barath Stalin K