Out of bounds write in V8 in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to execute arbitrary code inside the sandbox via a… (CVE-2026-87491)
A vulnerability in the V8 JavaScript engine used by Google Chrome prior to version 153.0.8010.36 allows a remote attacker to execute arbitrary code inside the sandbox by leveraging an out of bounds write. The flaw has a high severity with a CVSS score of 8.8 and requires user interaction to exploit via a crafted HTML page.
AI Analysis
Technical Summary
CVE-2026-87491 is an out of bounds write vulnerability in the V8 engine of Google Chrome versions before 153.0.8010.36. This flaw enables remote attackers to execute arbitrary code within the sandbox environment by convincing a user to visit a maliciously crafted HTML page. The vulnerability is classified under CWE-787 and has a CVSS 3.1 base score of 8.8, indicating high impact on confidentiality, integrity, and availability. No known exploits in the wild have been reported, and no explicit patch links or vendor advisories are provided in the data.
Potential Impact
Successful exploitation allows remote code execution inside the sandbox, potentially compromising the confidentiality, integrity, and availability of the affected system. The attack requires user interaction (UI:R) but no privileges or authentication. The vulnerability affects the core JavaScript engine, which is critical for browser security.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Users and administrators should monitor official Google Chrome security advisories for updates and apply the official fix once available. Until then, exercising caution with untrusted web content is advised.
Out of bounds write in V8 in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to execute arbitrary code inside the sandbox via a… (CVE-2026-87491)
Description
A vulnerability in the V8 JavaScript engine used by Google Chrome prior to version 153.0.8010.36 allows a remote attacker to execute arbitrary code inside the sandbox by leveraging an out of bounds write. The flaw has a high severity with a CVSS score of 8.8 and requires user interaction to exploit via a crafted HTML page.
CVSS v3.1
Score 8.8high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-87491 is an out of bounds write vulnerability in the V8 engine of Google Chrome versions before 153.0.8010.36. This flaw enables remote attackers to execute arbitrary code within the sandbox environment by convincing a user to visit a maliciously crafted HTML page. The vulnerability is classified under CWE-787 and has a CVSS 3.1 base score of 8.8, indicating high impact on confidentiality, integrity, and availability. No known exploits in the wild have been reported, and no explicit patch links or vendor advisories are provided in the data.
Potential Impact
Successful exploitation allows remote code execution inside the sandbox, potentially compromising the confidentiality, integrity, and availability of the affected system. The attack requires user interaction (UI:R) but no privileges or authentication. The vulnerability affects the core JavaScript engine, which is critical for browser security.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Users and administrators should monitor official Google Chrome security advisories for updates and apply the official fix once available. Until then, exercising caution with untrusted web content is advised.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-8x3p-8g9v-xc7m
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-87491"]
- Ecosystems
- []
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
Threat ID: 6aa15f19acd9273b49615a17
Added to database: 09/09/2026, 13:28:57 UTC
Last enriched: 09/09/2026, 13:33:46 UTC
Last updated: 09/09/2026, 14:51:59 UTC
Views: 2
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