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{"cveTags": [], "descriptions": [{"lang": "en", "value": "In hackage-server, user-controlled metadata from .cabal files are rendered into HTML\nhref attributes without proper sanitization, enabling stored\nCross-Site Scripting (XSS) attacks."}], "id": "CVE-2026-40472", "lastModified": "2026-04-23T16:16:25.753", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 9.9, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L", "version": "3.1"}, "exploitabilityScore": 3.1, "impactScore": 6.0, "source": "74b3a70d-cca6-4d34-9789-e83b222ae3be", "type": "Secondary"}]}, "published": "2026-04-23T16:16:25.753", "references": [{"source": "74b3a70d-cca6-4d34-9789-e83b222ae3be", "url": "https://osv.dev/vulnerability/HSEC-2026-0004"}], "sourceIdentifier": "74b3a70d-cca6-4d34-9789-e83b222ae3be", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "74b3a70d-cca6-4d34-9789-e83b222ae3be", "type": "Secondary"}]}

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