CVE-2026-9903EPSS p5.0%

CVE-2026-9903CVE-2026-9903

google / chrome

Description

Insufficient validation of untrusted input in Site Isolation in Google Chrome prior to 148.0.7778.216 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted MHTML page. (Chromium security severity: High)

Scoring

CVSS 5.0 ()
VectorCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L
EPSS0.15% probability of exploitation · percentile 5.0% · 2026-06-19T12:03:05Z
Last modified2026-06-03

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