Live › vulnerability › CVE-2021-30633
Go to dashboardA use-after-free bug in the Chromium Indexed DB API lets a remote attacker who already controls the browser renderer escape the sandbox via a crafted HTML page. It is listed as actively exploited in the wild by CISA.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 19:11 UTC, 3h before NVD. All times on this page are UTC.
Apply updates per vendor instructions.
| Product | Ecosystem | Affected | Fixed in |
|---|---|---|---|
| Google Chromium Indexed DB API | vendor | – | – |
Check the installed browser version (for example chrome://version in Chrome or edge://version in Edge) and compare it to the fixed release named by the vendor.
Update Chrome, Edge, Opera or any other Chromium-based browser to a build released after the 2021 Chromium fix, per vendor instructions.
Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
Google Chromium Indexed DB API contains a use-after-free vulnerability that allows a remote attacker, who has compromised the renderer process, to potentially perform a sandbox escape via a crafted HTML page. This vulnerability could affect multiple web browsers that utilize Chromium, including, but not limited to, Google Chrome, Microsoft Edge, and Opera.
CISA required action: Apply updates per vendor instructions.
This page as .md · .json · in your agent: get_signal("CVE-2021-30633")
CISA KEV catalog, Creative Commons 0 · EPSS scores by FIRST, used with attribution · NVD data is provided by NIST and is public domain. Posts quoted belong to their authors.