Live › vulnerability › CVE-2026-121134
A flaw in Chrome's BackgroundFetch feature before 157.0.8103.38 lets a remote attacker bypass web origin policy using a crafted HTML page. The Chromium security severity is rated Low.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-11-03 21:19 UTC. All times on this page are UTC.
Any desktop or mobile user running Google Chrome before 157.0.8103.38 who visits a malicious web page can be affected. Servers and managed environments are affected only through the browsers their people use. unknown whether the BackgroundFetch feature must be enabled for exposure.
No product ranges from the sources yet.
chrome://version157.0.8103.38157.0.8103.38 or laterEach row is the first time that source carried this signal. The analyst’s rows are its own findings.
Information loss in BackgroundFetch in Google Chrome prior to 157.0.8103.38 allowed a remote attacker to bypass web origin policy via a crafted HTML page. (Chromium security severity: Low)
This page as .md · .json · in your agent: get_signal("CVE-2026-121134")
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