Out-of-bounds write in Google Chromium - CVE-2026-91711
Published: September 16, 2026
Vulnerability identifier: #VU150143
CSH Severity: High
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-91711
CWE-ID: CWE-787
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a boundary error when processing untrusted HTML content in ServiceWorker. A remote attacker can create a specially crafted web page, trick the victim into opening it, trigger out-of-bounds write and execute arbitrary code on the target system.
Affected software
Google Chromium
Google Chrome
Debian Linux
Chrome OS
chromium (Debian package)
Google Chrome
Debian Linux
Chrome OS
chromium (Debian package)
How to mitigate CVE-2026-91711
Install update from vendor's website.
Google Chromium - update to 153.0.8010.47
Google Chrome - update to 153.0.8010.47
Chrome OS - update to 150.0.7871.287
chromium (Debian package) - update to 153.0.8010.47-2~deb13u1
Google Chrome - update to 153.0.8010.47
Chrome OS - update to 150.0.7871.287
chromium (Debian package) - update to 153.0.8010.47-2~deb13u1