CVE-2026-87646: Use after free in Google Chrome
Use after free in Web Authentication in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: High)
AI Analysis
Technical Summary
CVE-2026-87646 is a use-after-free vulnerability in the Web Authentication feature of Google Chrome before version 153.0.8010.36. This flaw allows remote code execution outside the sandbox via a crafted HTML page. The vulnerability is classified under CWE-416 (Use After Free). Although no CVSS score is provided, Chromium rates this issue as high severity. There is no information about active exploitation or official patch availability in the provided data.
Potential Impact
Successful exploitation of this vulnerability could allow a remote attacker to execute arbitrary code outside the Chrome sandbox, potentially compromising the affected system. This could lead to unauthorized actions or full system compromise depending on the privileges of the Chrome process.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Users should monitor official Google Chrome security advisories for updates and apply the official fix once available. Until then, exercising caution when visiting untrusted websites is recommended.
CVE-2026-87646: Use after free in Google Chrome
Description
Use after free in Web Authentication in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: High)
CVSS v3.1
Score 9.6critical
Affected software
pkg:github/chromium/chromiumRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-87646 is a use-after-free vulnerability in the Web Authentication feature of Google Chrome before version 153.0.8010.36. This flaw allows remote code execution outside the sandbox via a crafted HTML page. The vulnerability is classified under CWE-416 (Use After Free). Although no CVSS score is provided, Chromium rates this issue as high severity. There is no information about active exploitation or official patch availability in the provided data.
Potential Impact
Successful exploitation of this vulnerability could allow a remote attacker to execute arbitrary code outside the Chrome sandbox, potentially compromising the affected system. This could lead to unauthorized actions or full system compromise depending on the privileges of the Chrome process.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Users should monitor official Google Chrome security advisories for updates and apply the official fix once available. Until then, exercising caution when visiting untrusted websites is recommended.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-9x9x-4c34-42c8
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-87646"]
- Ecosystems
- []
- Database Specific Severity
- null
- Cvss Version
- null
Threat ID: 6aa15f8dacd9273b4961897e
Added to database: 09/09/2026, 13:30:53 UTC
Last enriched: 09/09/2026, 14:02:25 UTC
Last updated: 09/10/2026, 02:51:59 UTC
Views: 5
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