PT-2026-44612 · Google · Google Chrome

CVE-2026-9903 · Published 2026-05-27 · Updated 2026-05-30

Positive Technologies (AI Summary)

CVSS v3.1

5.0

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Google Chrome versions prior to 148.0.7778.216

Description Insufficient validation of untrusted input in Site Isolation allows a remote attacker who has compromised the renderer process to bypass site isolation using a crafted MHTML page. Site Isolation is a security feature that ensures pages from different sites are run in separate processes to prevent data leakage.

Recommendations Update to version 148.0.7778.216 or later.

Fix

DoS

RCE

Weakness Enumeration

CWE-20

Related Identifiers

CVE-2026-9903

ECHO-A824-1448-6AF1

OPENSUSE-SU-2026:10906-1

Affected Products

Google Chrome

References · 160

• https://security-tracker.debian.org/tracker/CVE-2026-9903 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-9903 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-9903 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-9903 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:10906-1 · Vendor Advisory
• https://suse.com/security/cve/CVE-2026-9931 · Note
• https://suse.com/security/cve/CVE-2026-9979 · Note
• https://suse.com/security/cve/CVE-2026-9894 · Note
• https://suse.com/security/cve/CVE-2026-9917 · Note
• https://suse.com/security/cve/CVE-2026-9964 · Note
• https://suse.com/security/cve/CVE-2026-9872 · Note
• https://suse.com/security/cve/CVE-2026-10015 · Note
• https://suse.com/security/cve/CVE-2026-9958 · Note
• https://suse.com/security/cve/CVE-2026-9877 · Note
• https://suse.com/security/cve/CVE-2026-9892 · Note