CVE-2026-17978: Side-channel information leakage in Google Chrome
CVE-2026-17978 is a side-channel information leakage vulnerability in the WebCodecs component of Google Chrome. It affects versions prior to 151.0.7922.72 and allows a remote attacker to obtain potentially sensitive information from process memory by using a crafted HTML page. The vulnerability has a medium severity rating with a CVSS score of 5.3. No known exploits in the wild have been reported. The vendor advisory does not explicitly confirm patch availability or remediation status.
AI Analysis
Technical Summary
This vulnerability involves side-channel information leakage in the WebCodecs feature of Google Chrome before version 151.0.7922.72. An attacker can exploit this flaw remotely by delivering a crafted HTML page that causes the browser to leak potentially sensitive information from its process memory. The CVSS 3.1 vector indicates the attack requires network access, high attack complexity, no privileges, and user interaction, with confidentiality impact rated high but no integrity or availability impact.
Potential Impact
An attacker can remotely obtain potentially sensitive information from the memory of the Chrome process, which could lead to information disclosure. There is no indication of integrity or availability impact. No known active exploitation has been reported.
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 for updates and apply them once available to address this vulnerability.
CVE-2026-17978: Side-channel information leakage in Google Chrome
Description
CVE-2026-17978 is a side-channel information leakage vulnerability in the WebCodecs component of Google Chrome. It affects versions prior to 151.0.7922.72 and allows a remote attacker to obtain potentially sensitive information from process memory by using a crafted HTML page. The vulnerability has a medium severity rating with a CVSS score of 5.3. No known exploits in the wild have been reported. The vendor advisory does not explicitly confirm patch availability or remediation status.
CVSS v3.1
Score 5.3medium
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
This vulnerability involves side-channel information leakage in the WebCodecs feature of Google Chrome before version 151.0.7922.72. An attacker can exploit this flaw remotely by delivering a crafted HTML page that causes the browser to leak potentially sensitive information from its process memory. The CVSS 3.1 vector indicates the attack requires network access, high attack complexity, no privileges, and user interaction, with confidentiality impact rated high but no integrity or availability impact.
Potential Impact
An attacker can remotely obtain potentially sensitive information from the memory of the Chrome process, which could lead to information disclosure. There is no indication of integrity or availability impact. No known active exploitation has been reported.
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 for updates and apply them once available to address this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Chrome
- Date Reserved
- 2026-07-27T23:37:12.011Z
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://chromereleases.googleblog.com/2026/07/stable-channel-update-for-desktop_0887107924.html","vendor":"Google"}]
Threat ID: 6a6aa0ad9c2644c7f849bd2d
Added to database: 07/30/2026, 00:54:05 UTC
Last enriched: 08/06/2026, 17:23:47 UTC
Last updated: 09/12/2026, 22:01:31 UTC
Views: 45
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