CVE-2026-78953EPSS p10.6%

CVE-2026-78953CVE-2026-78953

google / chrome

Description

Missing authorization in SiteIsolation in Google Chrome prior to 152.0.7977.65 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted PDF file. (Chromium security severity: Medium)

Scoring

CVSS 3.1 ()
VectorCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
EPSS0.21% probability of exploitation · percentile 10.6% · 2026-10-05T12:00:23Z
Last modified2026-09-19
Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.