Input validation error in Google Chromium - CVE-2026-113239
Published: October 21, 2026
Vulnerability identifier: #VU156390
CSH Severity: Low
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-113239
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to potentially disrupt browser operation.
The vulnerability exists due to improper range validation in the SiteIsolation component when handling input outside an expected range. A remote attacker can potentially induce processing of out-of-range input through crafted web content to cause errors that may disrupt browser operation.
Affected software
Google Chromium
Google Chrome
Debian Linux
chromium (Debian package)
Google Chrome
Debian Linux
chromium (Debian package)
How to mitigate CVE-2026-113239
Install security update from vendor's website.
Google Chromium - update to 156.0.8078.47
Google Chrome - update to 156.0.8078.47
chromium (Debian package) - update to 156.0.8078.47-1~deb13u1
Google Chrome - update to 156.0.8078.47
chromium (Debian package) - update to 156.0.8078.47-1~deb13u1