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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "PrestaShop Virtual POS Module", "vendor": "Sipay Electronic Money and Payment Services Inc.", "versions": [{"lessThan": "26.9.1", "status": "affected", "version": "26.8.1", "versionType": "semver"}]}], "source": "[email protected]"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Improper verification of cryptographic signature vulnerability in Sipay Electronic Money and Payment Services Inc. PrestaShop Virtual POS Module allows Signature Spoofing by Improper Validation.\n\nThis issue affects PrestaShop Virtual POS Module: from 26.8.1 before 26.9.1."}], "id": "CVE-2026-86405", "lastModified": "2026-10-09T13:21:13.267", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "[email protected]", "type": "Primary"}]}, "published": "2026-10-09T13:17:11.100", "references": [{"source": "[email protected]", "url": "https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-26-1287"}], "sourceIdentifier": "[email protected]", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-347"}], "source": "[email protected]", "type": "Primary"}]}

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