CVE Vulnerabilities

CVE-2026-8537

Permissive Cross-domain Security Policy with Untrusted Domains

Published: May 14, 2026 | Modified: May 19, 2026
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
RedHat/V2
RedHat/V3
7.4 IMPORTANT
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
Ubuntu
MEDIUM
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Insufficient policy enforcement in ViewTransitions in Google Chrome prior to 148.0.7778.168 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: High)

Weakness

The product uses a web-client protection mechanism such as a Content Security Policy (CSP) or cross-domain policy file, but the policy includes untrusted domains with which the web client is allowed to communicate.

Affected Software

NameVendorStart VersionEnd Version
ChromeGoogle*148.0.7778.168 (excluding)
Chromium-browserUbuntuupstream*

Extended Description

If a cross-domain policy file includes domains that should not be trusted, such as when using wildcards under a high-level domain, then the application could be attacked by these untrusted domains. In many cases, the attack can be launched without the victim even being aware of it.

Potential Mitigations

References