CVE-2026-9886: Use after free in Google Chrome
Use after free in Base in Google Chrome on Mac prior to 148.0.7778.216 allowed a remote attacker to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: Critical)
AI Analysis
Technical Summary
This vulnerability involves a use-after-free condition in the Base component of Google Chrome on Mac platforms before version 148.0.7778.216. Exploitation could enable a remote attacker to bypass sandbox restrictions via a specially crafted HTML page, potentially leading to elevated privileges or code execution outside the browser sandbox. The issue was publicly disclosed on May 28, 2026, and is rated critical by Chromium security. The vendor has released an update to fix this vulnerability as indicated in the official Chrome stable channel update announcement.
Potential Impact
Successful exploitation of this vulnerability could allow a remote attacker to escape the sandbox environment of Google Chrome on Mac, potentially leading to unauthorized code execution or privilege escalation outside the browser's restricted environment. This elevates the risk of further system compromise if exploited.
Mitigation Recommendations
A fix for this vulnerability is available in Google Chrome version 148.0.7778.216. Users and administrators should update to this version or later to remediate the issue. Since this is not a cloud service, remediation depends on applying the update. No additional mitigation steps are indicated in the vendor advisory.
CVE-2026-9886: Use after free in Google Chrome
Description
Use after free in Base in Google Chrome on Mac prior to 148.0.7778.216 allowed a remote attacker to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: Critical)
CVSS v3.1
Score 9.6critical
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a use-after-free condition in the Base component of Google Chrome on Mac platforms before version 148.0.7778.216. Exploitation could enable a remote attacker to bypass sandbox restrictions via a specially crafted HTML page, potentially leading to elevated privileges or code execution outside the browser sandbox. The issue was publicly disclosed on May 28, 2026, and is rated critical by Chromium security. The vendor has released an update to fix this vulnerability as indicated in the official Chrome stable channel update announcement.
Potential Impact
Successful exploitation of this vulnerability could allow a remote attacker to escape the sandbox environment of Google Chrome on Mac, potentially leading to unauthorized code execution or privilege escalation outside the browser's restricted environment. This elevates the risk of further system compromise if exploited.
Mitigation Recommendations
A fix for this vulnerability is available in Google Chrome version 148.0.7778.216. Users and administrators should update to this version or later to remediate the issue. Since this is not a cloud service, remediation depends on applying the update. No additional mitigation steps are indicated in the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Chrome
- Date Reserved
- 2026-05-28T17:24:43.676Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0877304591.html","vendor":"Google"}]
Threat ID: 6a18c659e29bf47b503b5038
Added to database: 5/28/2026, 10:48:57 PM
Last enriched: 5/29/2026, 12:05:37 AM
Last updated: 5/29/2026, 4:31:58 PM
Views: 5
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