CVE-2026-9882

Description

Integer overflow in ANGLE in Google Chrome prior to 148.0.7778.216 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: Critical)

CVSS Details

CVSS Score

6.5

Severity

MEDIUM

CVSS Vector

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

Configurations (Affected Products)

cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:* - VULNERABLE

cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* - NOT VULNERABLE

cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:* - VULNERABLE

cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:* - NOT VULNERABLE

cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* - NOT VULNERABLE

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-2026-9882 -->
<!-- This HTML page demonstrates a potential trigger for the integer overflow in ANGLE -->
<!DOCTYPE html>
<html>
<head>
    <title>CVE-2026-9882 PoC</title>
</head>
<body>
    <h1>CVE-2026-9882 PoC: ANGLE Integer Overflow</h1>
    <p>This page attempts to trigger the vulnerability via WebGL.</p>
    <canvas id="glCanvas"></canvas>
    <script>
        const canvas = document.getElementById('glCanvas');
        // Attempt to get a WebGL context
        const gl = canvas.getContext('webgl');
        
        if (!gl) {
            console.log("WebGL not supported");
            return;
        }

        // Step 1: Create a shader that might cause heavy calculation or specific buffer access
        // Note: Actual exploit requires specific shader code to trigger integer overflow in ANGLE
        const vsSource = `
            attribute vec4 aVertexPosition;
            void main() {
                gl_Position = aVertexPosition;
            }
        `;

        const fsSource = `
            precision mediump float;
            void main() {
                gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0);
            }
        `;

        // Helper function to compile shaders
        function loadShader(gl, type, source) {
            const shader = gl.createShader(type);
            gl.shaderSource(shader, source);
            gl.compileShader(shader);
            if (!gl.getShaderParameter(shader, gl.COMPILE_STATUS)) {
                console.error('An error occurred compiling the shaders: ' + gl.getShaderInfoLog(shader));
                gl.deleteShader(shader);
                return null;
            }
            return shader;
        }

        const vertexShader = loadShader(gl, gl.VERTEX_SHADER, vsSource);
        const fragmentShader = loadShader(gl, gl.FRAGMENT_SHADER, fsSource);
        
        const shaderProgram = gl.createProgram();
        gl.attachShader(shaderProgram, vertexShader);
        gl.attachShader(shaderProgram, fragmentShader);
        gl.linkProgram(shaderProgram);

        // Step 2: Attempt to allocate large buffers or manipulate uniform arrays to trigger overflow
        // This is a simulation of the condition leading to the overflow
        try {
            const buffer = gl.createBuffer();
            gl.bindBuffer(gl.ARRAY_BUFFER, buffer);
            
            // Hypothetical trigger: Large buffer size calculation causing overflow
            // In a real exploit, specific values would be used to wrap around the integer
            const largeSize = 0x7FFFFFFF; 
            // gl.bufferData(gl.ARRAY_BUFFER, largeSize, gl.STATIC_DRAW);
            
            console.log("Buffer operations completed. Check memory for leaks.");
        } catch (e) {
            console.log("Exception caught: " + e);
        }
    </script>
</body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-9882
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-9882
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-9882/
[4] VulDB https://vuldb.com/cve/CVE-2026-9882
[5] https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0877304591.html
[6] https://issues.chromium.org/issues/506375217

Raw JSON Data

JSON

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