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8.3
CVE-2026-12467: Google Chrome Extensions Sandbox Escape before 149.0.7827.155
CVE-2026-12467 · published 4 months ago
Summary
A hacker who has taken control of an extension in Google Chrome could potentially break out of the security sandbox and gain more control over your computer. This could lead to the installation of malicious software or other unwanted actions. To stay safe, make sure to update Google Chrome to the latest version.
What to do
- Update google chrome to version 149.0.7827.155 or later.
Affected software
| Ecosystem | Vendor | Product | Affected versions |
|---|---|---|---|
| Debian:11 | debian | chromium | All versions |
| Debian:12 | debian | chromium | All versions |
| Debian:13 | debian | chromium | All versions |
| Debian:14 | debian | chromium | All versions |
| – | chrome |
< 149.0.7827.155 cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:* |
Original advisory text
Use after free in Extensions in Google Chrome prior to 149.0.7827.155 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML p...
Use after free in Extensions in Google Chrome prior to 149.0.7827.155 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High)
References
- https://security-tracker.debian.org/tracker/CVE-2026-12467 Vendor Advisory
- https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_... Vendor Advisory
- https://issues.chromium.org/issues/520202726 Permissions Required
Internet-facing
14 days
Internal
At next upgrade
- Not known to be exploited
- Needs hands-on effort to exploit
- Gives an attacker full control
Severity
8.3
High
Type
CWE-416Use After Free
Timeline
Published17 Jun 2026
Updated4 Nov 2026
First seen17 Jun 2026
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