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8.8
CVE-2026-113321: Chrome and Chromium extensions may leak website data
CVE-2026-113321 · published 15 days ago
Summary
Versions of Google Chrome and Chromium older than 156.0.8078.47 let a specially crafted extension read information from other websites without permission. A remote attacker could use this to collect private data from users. Update Chrome or Chromium to the latest version to close the gap.
What to do
- Update debian chromium to version 156.0.8078.47-1~deb12u1.
- Update debian chromium to version 156.0.8078.47-1~deb13u1.
- Update debian chromium to version 156.0.8078.47-1.
- Update google chrome to version 156.0.8078.47 or later.
Affected software
| Ecosystem | Vendor | Product | Affected versions |
|---|---|---|---|
| – | chrome | < 156.0.8078.47 | |
| Debian:12 | debian | chromium |
< 156.0.8078.47-1~deb12u1 Fix: upgrade to 156.0.8078.47-1~deb12u1
|
| Debian:13 | debian | chromium |
< 156.0.8078.47-1~deb13u1 Fix: upgrade to 156.0.8078.47-1~deb13u1
|
| Debian:14 | debian | chromium |
< 156.0.8078.47-1 Fix: upgrade to 156.0.8078.47-1
|
Original advisory text
Missing authorization in Extensions in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to obtain cross-origin data via a crafted Chrome extension. (Chromium security severity: Medium)
Missing authorization in Extensions in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to obtain cross-origin data via a crafted Chrome extension. (Chromium security severity: Medium)
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
8.8
High
Type
CWE-416Use After Free
CWE-862Missing Authorization
Timeline
Published20 Oct 2026
Updated4 Nov 2026
First seen20 Oct 2026
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