CVE-2026-121132 Details
Description
Information leak in V8 in Google Chrome prior to 157.0.8103.38 allowed a remote attacker to obtain cross-origin data via a crafted HTML page. (Chromium security severity: Medium)
A medium-severity information leak vulnerability has been identified in the V8 JavaScript engine of Google Chrome. This issue affects versions of Chrome prior to 157.0.8103.38. The vulnerability allows remote attackers to access cross-origin data by exploiting a crafted HTML page. The root cause lies in V8's handling of WebAssembly NativeModules, where the same-byte modules are shared across different origins in the same renderer, inadvertently exposing private URL markers through the Error stack.
Users can update to Google Chrome version 157.0.8103.38 or later, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Nov 4, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://chromereleases.googleblog.com/2026/11/stable-channel-update-for-desktop.html | [email protected] | Release NotesVendor Advisory |
| https://issues.chromium.org/issues/564190098 | [email protected] | Issue Tracking |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-200 | Exposure of Sensitive Information to an Unauthorized Actor | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| google chrome | < 157.0.8103.38 |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Nov 5, 2026 | Initial Analysis | [email protected] |
| Nov 4, 2026 | CVE Modified | CISA-ADP |
| Nov 3, 2026 | New CVE Received | [email protected] |