CVE-2026-9911

Description

Integer overflow in ANGLE in Google Chrome prior to 148.0.7778.216 allowed a remote attacker to perform an out of bounds memory read via a crafted HTML page. (Chromium security severity: High)

CVSS Details

CVSS Score

4.3

Severity

MEDIUM

CVSS Vector

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

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

<!-- Proof of Concept for CVE-2026-9911 -->
<!-- This PoC demonstrates the trigger for the ANGLE integer overflow -->
<html>
<body>
<canvas id="glCanvas"></canvas>
<script>
    // Acquire WebGL context
    const canvas = document.getElementById('glCanvas');
    const gl = canvas.getContext('webgl');

    if (!gl) {
        console.log("WebGL not supported");
    }

    // Attempt to trigger integer overflow in ANGLE
    // by crafting specific vertex attributes or buffer data
    try {
        // Malicious buffer data designed to cause overflow
        // The specific size or content would target the vulnerable calculation
        const buffer = gl.createBuffer();
        gl.bindBuffer(gl.ARRAY_BUFFER, buffer);
        
        // Hypothetical trigger: passing values that cause size calculation overflow
        // gl.bufferData(gl.ARRAY_BUFFER, maliciousData, gl.STATIC_DRAW);
        
        console.log("Attempting to trigger vulnerability in ANGLE...");
    } catch (e) {
        console.log("Exception caught: " + e);
    }
</script>
</body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-9911
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-9911
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-9911/
[4] VulDB https://vuldb.com/cve/CVE-2026-9911
[5] https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0877304591.html
[6] https://issues.chromium.org/issues/499205491

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-9911", "sourceIdentifier": "[email protected]", "published": "2026-05-28T23:16:49.197", "lastModified": "2026-05-29T19:16:29.603", "vulnStatus": "Undergoing Analysis", "cveTags": [], "descriptions": [{"lang": "en", "value": "Integer overflow in ANGLE in Google Chrome prior to 148.0.7778.216 allowed a remote attacker to perform an out of bounds memory read 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:L/I:N/A:N", "baseScore": 4.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 1.4}]}, "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/499205491", "source": "[email protected]"}]}}