CVE-2026-9954

Description

Use after free in TabStrip in Google Chrome prior to 148.0.7778.216 allowed a remote attacker who convinced a user to engage in specific UI gestures to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)

CVSS Details

CVSS Score

7.5

Severity

HIGH

CVSS Vector

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

Configurations (Affected Products)

No configuration data available.

Google Chrome < 148.0.7778.216

PoC / Exploit Code

⚠ For Security Research Only

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

python

<!-- PoC for CVE-2026-9954: Conceptual Trigger -->
<!DOCTYPE html>
<html>
<head>
    <title>CVE-2026-9954 PoC</title>
    <script>
        // Function to attempt triggering the UAF condition
        function triggerUAF() {
            console.log("Attempting to trigger TabStrip UAF...");
            // Simulate specific UI gestures or DOM manipulation
            // Real exploitation requires precise heap grooming
            const div = document.createElement('div');
            document.body.appendChild(div);
            
            // Force layout recalculations and interactions
            for(let i=0; i<1000; i++) {
                div.style.left = i + 'px';
                // Interaction simulation placeholder
            }
            
            // Note: This is a conceptual representation.
            // Actual exploit requires specific memory addresses and ROP chains.
            alert("User interaction required to trigger potential crash.");
        }
        
        window.onload = function() {
            document.addEventListener('click', triggerUAF);
        };
    </script>
</head>
<body>
    <h1>Chrome TabStrip UAF Test</h1>
    <p>Click anywhere to attempt triggering the vulnerability.</p>
</body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-9954
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-9954
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-9954/
[4] VulDB https://vuldb.com/cve/CVE-2026-9954
[5] https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0877304591.html
[6] https://issues.chromium.org/issues/504175497

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-9954", "sourceIdentifier": "[email protected]", "published": "2026-05-28T23:16:53.590", "lastModified": "2026-05-29T19:16:30.297", "vulnStatus": "Undergoing Analysis", "cveTags": [], "descriptions": [{"lang": "en", "value": "Use after free in TabStrip in Google Chrome prior to 148.0.7778.216 allowed a remote attacker who convinced a user to engage in specific UI gestures to potentially exploit heap corruption 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:H/I:H/A:H", "baseScore": 7.5, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.6, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-416"}]}], "references": [{"url": "https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0877304591.html", "source": "[email protected]"}, {"url": "https://issues.chromium.org/issues/504175497", "source": "[email protected]"}]}}