CVE-2026-87543

EUVD-2026-74440
Missing authorization in Core in Google Chrome prior to 153.0.8010.36 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page. (Chromium security severity: Low)
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
4.3 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 14.67%
Affected Products (NVD)
VendorProductVersion
googlechrome
𝑥
< 153.0.8010.36
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
chromium
bookworm
vulnerable
bookworm (security)
155.0.8059.79-1~deb12u1
fixed
forky
154.0.8037.92-1
fixed
sid
155.0.8059.79-1
fixed
trixie
vulnerable
trixie (security)
155.0.8059.79-1~deb13u1
fixed
Common Weakness Enumeration
References
https://chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_0808145027.html
https://issues.chromium.org/issues/502452118