CVE-2026-5866: Use after free in Google Chrome
Use after free in Media in Google Chrome prior to 147.0.7727.55 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)
AI Analysis
Technical Summary
This vulnerability involves a use-after-free error in the Media component of Google Chrome before version 147.0.7727.55. Exploitation requires a remote attacker to craft an HTML page that triggers the flaw, enabling arbitrary code execution within the sandbox environment. The issue was publicly disclosed and patched by Google in a stable channel update. No CVSS score is available, but the Chromium security severity is high.
Potential Impact
Successful exploitation could allow a remote attacker to execute arbitrary code inside the sandbox of the affected Chrome browser, potentially leading to unauthorized actions within the browser context. However, the sandbox limits the scope of impact to the browser environment. There are no reports of active exploitation in the wild at this time.
Mitigation Recommendations
Google has released a stable channel update for Chrome version 147.0.7727.55 that addresses this vulnerability. Users should update their Chrome browsers to this version or later to mitigate the risk. Since this is a client-side application vulnerability, applying the official update is the primary and recommended mitigation.
CVE-2026-5866: Use after free in Google Chrome
Description
Use after free in Media in Google Chrome prior to 147.0.7727.55 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a use-after-free error in the Media component of Google Chrome before version 147.0.7727.55. Exploitation requires a remote attacker to craft an HTML page that triggers the flaw, enabling arbitrary code execution within the sandbox environment. The issue was publicly disclosed and patched by Google in a stable channel update. No CVSS score is available, but the Chromium security severity is high.
Potential Impact
Successful exploitation could allow a remote attacker to execute arbitrary code inside the sandbox of the affected Chrome browser, potentially leading to unauthorized actions within the browser context. However, the sandbox limits the scope of impact to the browser environment. There are no reports of active exploitation in the wild at this time.
Mitigation Recommendations
Google has released a stable channel update for Chrome version 147.0.7727.55 that addresses this vulnerability. Users should update their Chrome browsers to this version or later to mitigate the risk. Since this is a client-side application vulnerability, applying the official update is the primary and recommended mitigation.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Chrome
- Date Reserved
- 2026-04-08T19:34:33.573Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://chromereleases.googleblog.com/2026/04/stable-channel-update-for-desktop.html","vendor":"Google"}]
Threat ID: 69d6ca371cc7ad14dab3cb73
Added to database: 4/8/2026, 9:35:51 PM
Last enriched: 4/8/2026, 10:21:51 PM
Last updated: 4/9/2026, 8:15:00 AM
Views: 6
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