CVE-2026-2634CRITICAL 9.8EPSS p22.3%

CVE-2026-2634CVE-2026-2634

Description

Malicious scripts could cause desynchronization between the address bar and web content before a response is received in Firefox iOS, allowing attacker-controlled pages to be presented under spoofed domains. This vulnerability was fixed in Firefox for iOS 147.4.

Scoring

CVSS 3.19.8 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS0.31% probability of exploitation · percentile 22.3% · 2026-06-19T12:03:05Z
Published2026-02-24
Last modified2026-04-13

Underlying weaknesses· 1

CWE-451

References

  1. https://bugzilla.mozilla.org/show_bug.cgi?id=1975529
  2. https://www.mozilla.org/security/advisories/mfsa2026-12/

1

TypeTargetConfidenceTier
WeaknessUser Interface (UI) Misrepresentation of Critical Informationcwe-4510%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.