CVE-2026-11259 | Insufficient validation of untrusted input in Cast in Google… | CVSS 4.3 MEDIUM

Description

Insufficient validation of untrusted input in Cast in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to bypass same origin policy via a crafted HTML page. (Chromium security severity: Low)

Metadata

CVE ID: CVE-2026-11259
State: PUBLISHED
Assigner: Chrome
Reserved: 2026-06-04 17:11 UTC
Published: 2026-06-04 23:06 UTC
Last updated: 2026-06-05 19:54 UTC
Primary CWE: CWE-20
Insufficient validation of untrusted input
Vendor / Product: Google / Chrome
Sources: cve.org · NVD

Severity & Metrics

4.3 MEDIUM CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

SSVC — CISA Coordinator

Exploitation: none
Automatable: no
Tech. Impact: partial

Affected products (1)

Vendor	Product	Platform	Versions
Google	Chrome	—	149.0.7827.53 < 149.0.7827.53

Weakness (CWE)

CWE	Source	Description
CWE-20	cna	Insufficient validation of untrusted input
CWE-20	adp	CWE-20 Improper Input Validation

CVSS scores (1)

Score	Severity	Version	Source	Vector
4.3	MEDIUM	3.1	adp	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

References (2)