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8.8
CVE-2026-113064: Chrome and Chromium may expose data via malicious web page
CVE-2026-113064 · published 15 days ago
Summary
Versions of Google Chrome and the Chromium browser before 156.0.8078.47 can be tricked by a specially crafted web page to reveal private information. This happens because of a timing flaw in the browser’s optimization component. Update the browsers to the latest version to stop the data leak.
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
Race condition in OptimizationGuide in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to leak sensitive information via a crafted HTML page. (Chromium security severity: Medium)
Race condition in OptimizationGuide in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to leak sensitive information via a crafted HTML page. (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-119Buffer Overflow
CWE-367Time-of-check Time-of-use (TOCTOU) Race Condition
Timeline
Published20 Oct 2026
Updated4 Nov 2026
First seen20 Oct 2026
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