CVE-2026-78987: Information leak in Google Chrome
Description
CVE-2026-78987 is an information leak vulnerability in the Canvas component of Google Chrome prior to version 152.0.7977.65. This flaw allows a remote attacker to bypass the web origin policy by using a crafted HTML page. The vulnerability has a medium severity rating and a CVSS score of 4.3. It affects versions before 152.0.7977.65. Google has released an update to address this issue.
CVSS v3.1
Score 4.3medium
Affected software
Chrome
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Google Chrome's Canvas feature allows a remote attacker to bypass the web origin policy, potentially leading to information disclosure. The issue exists in versions prior to 152.0.7977.65 and is triggered via a crafted HTML page. The CVSS 3.1 base score is 4.3, indicating a medium severity with network attack vector, low attack complexity, no privileges required, user interaction required, unchanged scope, and low impact on confidentiality. Google has published a stable channel update to fix this vulnerability.
Potential Impact
An attacker can bypass the web origin policy through a crafted HTML page, leading to an information leak. This could expose sensitive information accessible via the Canvas API. The impact is limited to confidentiality with no integrity or availability impact. The vulnerability requires user interaction and can be exploited remotely without privileges.
Mitigation Recommendations
Google has released an official fix in Chrome version 152.0.7977.65. Users and administrators should update to this version or later to remediate the vulnerability. No additional mitigation steps are required beyond applying the official update.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Chrome
- Date Reserved
- 2026-08-25T06:06:47.604Z
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://chromereleases.googleblog.com/2026/08/stable-channel-update-for-desktop_0256176589.html","vendor":"Google"}]
Threat ID: 6a8df9c2acd9273b49ac6e9a
Added to database: 08/25/2026, 20:23:30 UTC
Last enriched: 09/10/2026, 16:52:35 UTC
Last updated: 10/08/2026, 06:48:19 UTC
Views: 29
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