Main Vulnerability Database Vulnerabilities #VU159177

Input validation error in Google Chromium - CVE-2026-121134

Published: November 4, 2026

Vulnerability identifier: #VU159177

CSH Severity: Low

CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-121134

CWE-ID: CWE-20

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to cause information loss in Google Chrome.

The vulnerability exists due to an unspecified flaw in the BackgroundFetch component when handling background fetch operations. A remote attacker can trigger the affected functionality to cause information loss, although the precise exploitation mechanism is not described.

Affected software

Google Chromium
Google Chrome

How to mitigate CVE-2026-121134

Install security update from vendor's website.

Google Chromium - update to 157.0.8103.38
Google Chrome - update to 157.0.8103.38

External References

Related Security Bulletins