CVE-2026-8574

Description

Use after free in Core in Google Chrome on Windows prior to 148.0.7778.168 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: Medium)

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 (Windows) < 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-2026-8574 (Conceptual)
This PoC demonstrates triggering the UAF in Chrome Core.
Note: Actual exploit requires specific heap grooming and renderer compromise.
-->
<html>
<head>
<script>
function trigger_uaf() {
    // Step 1: Create an object that will be freed
    let vulnerable_obj = document.createElement('div');
    
    // Step 2: Setup a reference to the object
    let ref = vulnerable_obj;
    
    // Step 3: Trigger the free operation in Core
    vulnerable_obj.remove(); 
    
    // Step 4: Attempt to use the freed object (UAF)
    // In a real exploit, this memory would be controlled by the attacker
    setTimeout(() => {
        console.log(ref.innerHTML); 
    }, 100);
}

window.onload = trigger_uaf;
</script>
</head>
<body>
<p>CVE-2026-8574 PoC</p>
</body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-8574
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-8574
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-8574/
[4] VulDB https://vuldb.com/cve/CVE-2026-8574
[5] https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_12.html
[6] https://issues.chromium.org/issues/495902113

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-8574", "sourceIdentifier": "[email protected]", "published": "2026-05-14T20:17:19.727", "lastModified": "2026-05-14T22:16:50.903", "vulnStatus": "Awaiting Analysis", "cveTags": [], "descriptions": [{"lang": "en", "value": "Use after free in Core in Google Chrome on Windows prior to 148.0.7778.168 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: Medium)"}], "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_12.html", "source": "[email protected]"}, {"url": "https://issues.chromium.org/issues/495902113", "source": "[email protected]"}]}}