CVE-2026-78976: Improper input validation in Google Chrome
Description
Improper input validation in StorageAccessAPI in Google Chrome prior to 152.0.7977.65 allowed a remote attacker who had compromised the renderer process to bypass web origin policy via a crafted HTML page. (Chromium security severity: Medium)
CVSS v3.1
Score 4.3medium
Affected software
Chrome
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Google Chrome's StorageAccessAPI is due to improper input validation. An attacker with control over the renderer process can exploit this flaw to bypass the web origin policy, potentially allowing unauthorized access to web storage data. The issue is fixed in Chrome version 152.0.7977.65.
Potential Impact
The vulnerability allows a remote attacker who has already compromised the renderer process to bypass the web origin policy, which could lead to unauthorized access to data stored by web applications. The impact is limited to confidentiality (partial data disclosure) with no integrity or availability impact reported.
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. Refer to the official Google Chrome stable channel update advisory at https://chromereleases.googleblog.com/2026/08/stable-channel-update-for-desktop_0256176589.html for details.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Chrome
- Date Reserved
- 2026-08-25T06:06:32.913Z
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://chromereleases.googleblog.com/2026/08/stable-channel-update-for-desktop_0256176589.html","vendor":"Google"}]
Threat ID: 6a8df9c0acd9273b49ac6e59
Added to database: 08/25/2026, 20:23:28 UTC
Last enriched: 09/18/2026, 23:08:38 UTC
Last updated: 10/07/2026, 06:48:18 UTC
Views: 43
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