CVE-2026-8010

Description

Insufficient validation of untrusted input in SiteIsolation in Google Chrome prior to 148.0.7778.96 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page. (Chromium security severity: Low)

CVSS Details

CVSS Score

6.3

Severity

MEDIUM

CVSS Vector

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

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 < 148.0.7778.96

PoC / Exploit Code

⚠ For Security Research Only

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

python

<!-- Proof of Concept for CVE-2026-8010 -->
<!-- This PoC demonstrates the concept of bypassing SiteIsolation -->
<!-- Note: Exploitation requires prior compromise of the renderer process -->

<html>
<head>
    <title>CVE-2026-8010 PoC</title>
    <meta charset="UTF-8">
</head>
<body>
    <h1>Site Isolation Bypass Test</h1>
    <p>Attempting to access cross-origin resources via crafted HTML.</p>
    
    <script>
        // Simulate the behavior where a compromised renderer sends malformed input
        // to the browser process to bypass security checks.
        
        function triggerExploit() {
            // In a real scenario, this would involve specific IPC messages or
            // DOM manipulations that trick the browser into relaxing isolation.
            console.log("[+] Triggering crafted input validation check...");
            
            // Hypothetical check for the vulnerability condition
            try {
                // Attempt to access data from a different origin (e.g., cookies or DOM)
                // This simulates the successful bypass of SiteIsolation.
                // The actual mechanism depends on the specific vulnerability in 148.0.7778.96.
                
                // Example: Attempt to read a property that would normally be blocked
                var targetOrigin = "https://www.google.com";
                
                // Logic to simulate the bypass:
                // If the browser incorrectly trusts the renderer's origin claim,
                // the following might succeed (conceptually).
                
                alert("[!] If Site Isolation is bypassed, cross-origin data access is possible.");
                
            } catch (error) {
                console.log("[-] Bypass failed: " + error.message);
            }
        }

        // Requires User Interaction (UI:R)
        document.addEventListener('click', triggerExploit);
    </script>
    
    <button>Click to Test Bypass (Requires Interaction)</button>
</body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-8010
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-8010
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-8010/
[4] VulDB https://vuldb.com/cve/CVE-2026-8010
[5] https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop.html
[6] https://issues.chromium.org/issues/496624084

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-8010", "sourceIdentifier": "[email protected]", "published": "2026-05-06T19:16:51.970", "lastModified": "2026-05-07T15:17:09.823", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Insufficient validation of untrusted input in SiteIsolation in Google Chrome prior to 148.0.7778.96 allowed a remote attacker who had compromised the renderer process to bypass site isolation 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:L/I:L/A:L", "baseScore": 6.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "LOW"}, "exploitabilityScore": 2.8, "impactScore": 3.4}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-20"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*", "versionEndExcluding": "148.0.7778.96", "matchCriteriaId": "5E9416A8-4333-4195-983C-78F521AF6245"}]}, {"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/2026/05/stable-channel-update-for-desktop.html", "source": "[email protected]", "tags": ["Vendor Advisory", "Release Notes"]}, {"url": "https://issues.chromium.org/issues/496624084", "source": "[email protected]", "tags": ["Permissions Required"]}]}}