DEBIAN-CVE-2026-121123: Use After Free
Published Nov 3, 2026
·Updated
Use after free in Canvas in Google Chrome prior to 157.0.8103.38 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: High)
Affected Software
3 affected components
debian/chromium*
debian/chromium*
debian/chromium*
Event History
Nov 3, 2026
CVE Published
via OSV·09:17 PM
Data Sourced
via OSV·09:17 PM
DescriptionSeverityAffected Software
Frequently Asked Questions
1
Who is exposed to this vulnerability?
Users of Debian's chromium package are exposed if they run a version prior to 157.0.8103.38 and visit a crafted HTML page.
2
What does an attacker need to exploit it?
The attacker can be remote and does not need privileges, but exploitation requires user interaction with a crafted HTML page. Successful exploitation can execute arbitrary code inside the browser sandbox.
3
Does successful exploitation escape the browser sandbox?
The available information states that arbitrary code execution occurs inside the sandbox. It does not establish a sandbox escape.