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{"affected": [{"affectedData": [{"product": "Halibut", "vendor": "Octopus Deploy", "versions": [{"lessThan": "4.4.7", "status": "affected", "version": "unspecified", "versionType": "custom"}]}], "source": "security@octopus.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:octopus:halibut:*:*:*:*:*:*:*:*", "matchCriteriaId": "5CC24472-C53D-4C6A-B7F6-11BA8C479B6D", "versionEndExcluding": "4.4.7", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In Halibut versions prior to 4.4.7 there is a deserialisation vulnerability that could allow remote code execution on systems that already trust each other based on certificate verification."}, {"lang": "es", "value": "En Halibut versiones anteriores a 4.4.7, se presenta una vulnerabilidad de deserializaci\u00f3n que podr\u00eda permitir una ejecuci\u00f3n de c\u00f3digo remota en sistemas que ya conf\u00edan entre s\u00ed en base a la verificaci\u00f3n de certificados"}], "id": "CVE-2021-31819", "lastModified": "2026-06-17T03:52:17.733", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 10.0, "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "vectorString": "AV:N/AC:L/Au:N/C:C/I:C/A:C", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 10.0, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "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": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-09-22T02:15:09.593", "references": [{"source": "security@octopus.com", "url": "https://advisories.octopus.com/adv/2021-08---Remote-Code-Execution-via-Deserialisation-in-the-Halibut-Protocol-%28CVE-2021-31819%29.2250309681.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://advisories.octopus.com/adv/2021-08---Remote-Code-Execution-via-Deserialisation-in-the-Halibut-Protocol-%28CVE-2021-31819%29.2250309681.html"}], "sourceIdentifier": "security@octopus.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-502"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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