CVE-2026-78940: Improper initialization in Google Chrome
Description
CVE-2026-78940 is a medium severity vulnerability in Google Chrome prior to version 152.0.7977.65. It involves improper initialization in the network component that allows a remote attacker to bypass the web origin policy using a crafted HTML page. This could lead to limited confidentiality impact without affecting integrity or availability.
CVSS v3.1
Score 4.3medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability arises from improper initialization in the network module of Google Chrome versions before 152.0.7977.65. Exploitation allows a remote attacker to bypass the web origin policy, which is a fundamental security control that restricts how documents or scripts loaded from one origin can interact with resources from another origin. The CVSS 3.1 score is 4.3 (medium), reflecting a network attack vector with low complexity, no privileges required, but requiring user interaction. The impact is limited to confidentiality loss without integrity or availability impact.
Potential Impact
The vulnerability allows remote attackers to bypass the web origin policy, potentially exposing some confidential information from web pages. There is no impact on data integrity or system availability. No known exploits are reported in the wild at this time.
Mitigation Recommendations
A fix is available in Google Chrome version 152.0.7977.65. Users and administrators should update to this version or later to remediate the vulnerability. No additional mitigation steps are indicated by the vendor.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-rcwf-5v85-2ggr
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-78940"]
- Database Specific Severity
- MODERATE
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a91a878acd9273b49069dbb
Added to database: 08/28/2026, 15:25:44 UTC
Last enriched: 09/18/2026, 02:01:18 UTC
Last updated: 10/13/2026, 18:48:24 UTC
Views: 64
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