CVE-2026-78953

EUVD-2026-65927
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)
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
3.1 LOW
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 10.7%
Affected Products (NVD)
VendorProductVersion
googlechrome
𝑥
< 152.0.7977.65
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
chromium
bookworm
vulnerable
bookworm (security)
154.0.8037.92-1~deb12u1
fixed
forky
154.0.8037.92-1
fixed
sid
154.0.8037.92-1
fixed
trixie
vulnerable
trixie (security)
154.0.8037.92-1~deb13u1
fixed
Common Weakness Enumeration
References
https://chromereleases.googleblog.com/2026/08/stable-channel-update-for-desktop_0256176589.html
https://issues.chromium.org/issues/516665605