CVE-2026-81267

MEDIUM 5.4

Stalled popup navigation could allow address bar origin spoofing in Firefox for iOS

CVSS Score

5.4

EPSS Score

0.0%

EPSS Percentile

0th

A malicious webpage could stall a popup's cross-origin navigation after commit, causing the address bar to display the destination origin while continuing to render attacker-controlled content. This vulnerability was fixed in Firefox for iOS 155.0.

Vendor	mozilla
Product	firefox for ios
Ecosystems	Browser JavaScript
Industries	Technology
Published	Aug 31, 2026
Last Updated	Aug 31, 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=2052758 mozilla.org: https://www.mozilla.org/security/advisories/mfsa2026-81/

Credits

Azza Tegar Naufal Ataullah