CVE-2026-17781: Inappropriate implementation in Google Chrome
A vulnerability in Google Chrome prior to version 151.0.7922.72 allows an attacker to leak cross-origin data by convincing a user to install a malicious extension. The issue stems from an inappropriate implementation in Chrome Extensions. The vulnerability has a medium severity rating and a CVSS score of 4.3.
AI Analysis
Technical Summary
CVE-2026-17781 describes a security flaw in Google Chrome's extension system before version 151.0.7922.72. This vulnerability enables an attacker who persuades a user to install a crafted malicious extension to leak cross-origin data. The flaw is categorized under CWE-284 (Improper Access Control) and has been assigned a medium severity level by Chromium security. The CVSS vector indicates the attack requires user interaction but no privileges and can be exploited remotely over the network.
Potential Impact
An attacker can leak cross-origin data by exploiting this vulnerability through a malicious Chrome extension installed by the user. This could lead to unauthorized disclosure of sensitive information accessible to the browser. There is no indication of integrity or availability impact, and no known exploits are reported in the wild.
Mitigation Recommendations
Google has released Chrome version 151.0.7922.72 which addresses this vulnerability. Users and administrators should update to this version or later to mitigate the risk. No additional temporary mitigations or workarounds are indicated in the vendor advisory.
CVE-2026-17781: Inappropriate implementation in Google Chrome
Description
A vulnerability in Google Chrome prior to version 151.0.7922.72 allows an attacker to leak cross-origin data by convincing a user to install a malicious extension. The issue stems from an inappropriate implementation in Chrome Extensions. The vulnerability has a medium severity rating and a CVSS score of 4.3.
CVSS v3.1
Score 4.3medium
Affected software
Chrome
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-17781 describes a security flaw in Google Chrome's extension system before version 151.0.7922.72. This vulnerability enables an attacker who persuades a user to install a crafted malicious extension to leak cross-origin data. The flaw is categorized under CWE-284 (Improper Access Control) and has been assigned a medium severity level by Chromium security. The CVSS vector indicates the attack requires user interaction but no privileges and can be exploited remotely over the network.
Potential Impact
An attacker can leak cross-origin data by exploiting this vulnerability through a malicious Chrome extension installed by the user. This could lead to unauthorized disclosure of sensitive information accessible to the browser. There is no indication of integrity or availability impact, and no known exploits are reported in the wild.
Mitigation Recommendations
Google has released Chrome version 151.0.7922.72 which addresses this vulnerability. Users and administrators should update to this version or later to mitigate the risk. No additional temporary mitigations or workarounds are indicated in the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Chrome
- Date Reserved
- 2026-07-27T23:34:44.307Z
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://chromereleases.googleblog.com/2026/07/stable-channel-update-for-desktop_0887107924.html","vendor":"Google"}]
Threat ID: 6a6aa0919c2644c7f849b230
Added to database: 07/30/2026, 00:53:37 UTC
Last enriched: 08/06/2026, 17:22:25 UTC
Last updated: 09/12/2026, 22:01:31 UTC
Views: 72
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