CVE-2026-17859: Side-channel information leakage in Google Chrome
A side-channel information leakage vulnerability exists in Google Chrome's favicon implementation prior to version 151.0.7922.72. This flaw allows a remote attacker to leak cross-origin data via a crafted HTML page. The vulnerability has been assigned medium severity by Chromium security. No CVSS score is available, and no explicit patch or remediation level is stated in the provided data.
AI Analysis
Technical Summary
CVE-2026-17859 is a side-channel information leakage vulnerability in Google Chrome affecting versions before 151.0.7922.72. The issue arises from an inappropriate implementation of favicons, which enables a remote attacker to leak cross-origin data by using a specially crafted HTML page. The vulnerability was publicly disclosed with medium severity by Chromium security. Although a vendor advisory URL is provided, it does not explicitly confirm patch availability or remediation status in the input data.
Potential Impact
The vulnerability allows remote attackers to leak cross-origin data, potentially exposing sensitive information from other origins. This could undermine the browser's same-origin policy protections, leading to privacy and security concerns for users. No known exploits in the wild have been reported at the time of publication.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory at https://chromereleases.googleblog.com/2026/07/stable-channel-update-for-desktop_0887107924.html for current remediation guidance. Users and administrators should monitor official Google Chrome release notes and update to version 151.0.7922.72 or later once confirmed to address this issue.
CVE-2026-17859: Side-channel information leakage in Google Chrome
Description
A side-channel information leakage vulnerability exists in Google Chrome's favicon implementation prior to version 151.0.7922.72. This flaw allows a remote attacker to leak cross-origin data via a crafted HTML page. The vulnerability has been assigned medium severity by Chromium security. No CVSS score is available, and no explicit patch or remediation level is stated in the provided data.
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-17859 is a side-channel information leakage vulnerability in Google Chrome affecting versions before 151.0.7922.72. The issue arises from an inappropriate implementation of favicons, which enables a remote attacker to leak cross-origin data by using a specially crafted HTML page. The vulnerability was publicly disclosed with medium severity by Chromium security. Although a vendor advisory URL is provided, it does not explicitly confirm patch availability or remediation status in the input data.
Potential Impact
The vulnerability allows remote attackers to leak cross-origin data, potentially exposing sensitive information from other origins. This could undermine the browser's same-origin policy protections, leading to privacy and security concerns for users. No known exploits in the wild have been reported at the time of publication.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory at https://chromereleases.googleblog.com/2026/07/stable-channel-update-for-desktop_0887107924.html for current remediation guidance. Users and administrators should monitor official Google Chrome release notes and update to version 151.0.7922.72 or later once confirmed to address this issue.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Chrome
- Date Reserved
- 2026-07-27T23:35:06.081Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://chromereleases.googleblog.com/2026/07/stable-channel-update-for-desktop_0887107924.html","vendor":"Google"}]
Threat ID: 6a6aa09b9c2644c7f849b70c
Added to database: 07/30/2026, 00:53:47 UTC
Last enriched: 07/30/2026, 03:24:50 UTC
Last updated: 07/30/2026, 03:24:50 UTC
Views: 2
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