CVE-2026-76033: Inappropriate implementation in Google Chrome
CVE-2026-76033 is a vulnerability in Google Chrome prior to version 151.0.7922.169 involving an inappropriate implementation of CORS. This flaw could allow a remote attacker who has already compromised the renderer process to bypass site isolation using a crafted HTML page. The vulnerability has a medium severity rating with a CVSS score of 4.2.
AI Analysis
Technical Summary
The vulnerability CVE-2026-76033 affects Google Chrome versions before 151.0.7922.169. It involves an inappropriate implementation of Cross-Origin Resource Sharing (CORS) that enables a remote attacker, who has compromised the renderer process, to bypass site isolation protections by using a crafted HTML page. This issue was assigned a medium severity level by Chromium security with a CVSS v3.1 score of 4.2, indicating limited impact on confidentiality and integrity, and no impact on availability. The vendor has published an advisory indicating a stable channel update for desktop Chrome addressing this issue.
Potential Impact
An attacker who has already compromised the renderer process in affected Chrome versions could bypass site isolation protections, potentially allowing access to data from other sites within the browser process. The impact is limited to confidentiality and integrity with no availability impact. There are no known exploits in the wild at this time.
Mitigation Recommendations
A fix is available in Google Chrome version 151.0.7922.169. Users and administrators should update to this version or later to remediate the vulnerability. Refer to the official Google Chrome stable channel update advisory for details: https://chromereleases.googleblog.com/2026/08/stable-channel-update-for-desktop_0826575033.html
CVE-2026-76033: Inappropriate implementation in Google Chrome
Description
CVE-2026-76033 is a vulnerability in Google Chrome prior to version 151.0.7922.169 involving an inappropriate implementation of CORS. This flaw could allow a remote attacker who has already compromised the renderer process to bypass site isolation using a crafted HTML page. The vulnerability has a medium severity rating with a CVSS score of 4.2.
CVSS v3.1
Score 4.2medium
Affected software
Chrome
pkg:github/chromium/chromiumRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability CVE-2026-76033 affects Google Chrome versions before 151.0.7922.169. It involves an inappropriate implementation of Cross-Origin Resource Sharing (CORS) that enables a remote attacker, who has compromised the renderer process, to bypass site isolation protections by using a crafted HTML page. This issue was assigned a medium severity level by Chromium security with a CVSS v3.1 score of 4.2, indicating limited impact on confidentiality and integrity, and no impact on availability. The vendor has published an advisory indicating a stable channel update for desktop Chrome addressing this issue.
Potential Impact
An attacker who has already compromised the renderer process in affected Chrome versions could bypass site isolation protections, potentially allowing access to data from other sites within the browser process. The impact is limited to confidentiality and integrity with no availability impact. There are no known exploits in the wild at this time.
Mitigation Recommendations
A fix is available in Google Chrome version 151.0.7922.169. Users and administrators should update to this version or later to remediate the vulnerability. Refer to the official Google Chrome stable channel update advisory for details: https://chromereleases.googleblog.com/2026/08/stable-channel-update-for-desktop_0826575033.html
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Chrome
- Date Reserved
- 2026-08-18T19:44:47.455Z
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://chromereleases.googleblog.com/2026/08/stable-channel-update-for-desktop_0826575033.html","vendor":"Google"}]
Threat ID: 6a84c574c6e8be0332bb23ea
Added to database: 08/18/2026, 20:49:56 UTC
Last enriched: 09/11/2026, 20:48:43 UTC
Last updated: 10/02/2026, 02:46:06 UTC
Views: 42
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