CVE-2026-8516

Description

Insufficient validation of untrusted input in DataTransfer in Google Chrome prior to 148.0.7778.168 allowed a remote attacker who convinced a user to engage in specific UI gestures to obtain potentially sensitive information from process memory via a crafted HTML page. (Chromium security severity: Critical)

CVSS Details

CVSS Score

5.3

Severity

MEDIUM

CVSS Vector

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

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-2026-8516 (Conceptual) -->
<!-- This demonstrates a potential trigger for DataTransfer validation issues -->
<!DOCTYPE html>
<html>
<body>

<h2>Drag and Drop PoC</h2>
<p>Drag the box below to trigger the vulnerability check.</p>

<div id="dragSource" draggable="true" style="width:100px; height:100px; background:orange;">Drag Me</div>

<script>
  const source = document.getElementById('dragSource');
  
  source.addEventListener('dragstart', (event) => {
    // Setting specific data that might trigger insufficient validation
    event.dataTransfer.setData('text/plain', 'Malicious Payload');
    event.dataTransfer.effectAllowed = 'copy';
    
    console.log('Drag started. Attempting to access memory data...');
    
    // Hypothetical exploitation attempt
    // In a real exploit, this might leak memory addresses or content
  });
</script>

</body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-8516
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-8516
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-8516/
[4] VulDB https://vuldb.com/cve/CVE-2026-8516
[5] https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_12.html
[6] https://issues.chromium.org/issues/496393078

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-8516", "sourceIdentifier": "[email protected]", "published": "2026-05-14T20:17:12.320", "lastModified": "2026-05-14T22:16:45.980", "vulnStatus": "Awaiting Analysis", "cveTags": [], "descriptions": [{"lang": "en", "value": "Insufficient validation of untrusted input in DataTransfer in Google Chrome prior to 148.0.7778.168 allowed a remote attacker who convinced a user to engage in specific UI gestures to obtain potentially sensitive information from process memory 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:H/PR:N/UI:R/S:U/C:H/I:N/A:N", "baseScore": 5.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 1.6, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-20"}]}], "references": [{"url": "https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_12.html", "source": "[email protected]"}, {"url": "https://issues.chromium.org/issues/496393078", "source": "[email protected]"}]}}