Vulnerability details

CVE-2026-11056

Google Chrome

CVSS 3.1

9.6Critical

Official description

Insufficient validation of untrusted input in SiteIsolation in Google Chrome on Windows prior to 149.0.7827.53 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: Medium)

CVSS scores

Score	Version	Source	Vector
9.6Critical	3.1	CISA ADP / Vulnrichment (CISA-ADP)	`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H`

Affected products

Vendor	Product	Versions	Source
Google	Chrome	149.0.7827.53 ≤ v < 149.0.7827.53	CVEProject cvelistV5 (CNA)

References and advisories

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Details

Published: 2026-06-05
Last updated: 2026-06-05
State: Published
Assigner (CNA): Chrome

Exploit prediction (EPSS)

0.23%

Probability of exploitation in 30 days

14.4%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: No
Exploitation: None
Technical impact: Total

Weaknesses (CWE)

CWE-20
Insufficient validation of untrusted input