{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-4881", "assignerOrgId": "6f4f8c89-ef06-4bae-a2a5-6734ddf76272", "state": "PUBLISHED", "assignerShortName": "Octopus", "dateReserved": "2026-03-26T07:19:05.417Z", "datePublished": "2026-06-04T08:49:59.083Z", "dateUpdated": "2026-06-04T13:05:54.396Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "6f4f8c89-ef06-4bae-a2a5-6734ddf76272", "shortName": "Octopus", "dateUpdated": "2026-06-04T08:49:59.083Z" }, "problemTypes": [ { "descriptions": [ { "lang": "en", "description": "Insufficient permission checks on an API endpoint" } ] } ], "affected": [ { "vendor": "Octopus Deploy", "product": "Octopus Server", "platforms": [ "Windows", "Linux" ], "versions": [ { "status": "affected", "version": "2023.0.0", "lessThan": "2025.4.10523", "versionType": "custom" }, { "status": "affected", "version": "2025.4.0", "lessThan": "2025.4.10545", "versionType": "custom" }, { "status": "affected", "version": "2026.1.0", "lessThan": "2026.1.11313", "versionType": "custom" } ], "defaultStatus": "unaffected" } ], "descriptions": [ { "lang": "en", "value": "In affected versions of Octopus Server, permissions were not checked correctly resulting in any authenticated user being able to make server level changes using a certain API endpoint despite receiving an error.", "supportingMedia": [ { "type": "text/html", "base64": false, "value": "In affected versions of Octopus Server, permissions were not checked correctly resulting in any authenticated user being able to make server level changes using a certain API endpoint despite receiving an error." } ] } ], "references": [ { "url": "https://advisories.octopus.com/post/2026/sa2026-04" } ], "metrics": [ { "format": "CVSS", "scenarios": [ { "lang": "en", "value": "GENERAL" } ], "cvssV4_0": { "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "subConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "subIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "MEDIUM", "baseScore": 6, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N" } } ], "credits": [ { "lang": "en", "value": "This vulnerability was found by MononcleMich", "type": "finder" } ], "source": { "discovery": "EXTERNAL" }, "x_generator": { "engine": "Vulnogram 1.0.2" } }, "adp": [ { "problemTypes": [ { "descriptions": [ { "type": "CWE", "cweId": "CWE-862", "lang": "en", "description": "CWE-862 Missing Authorization" } ] } ], "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-06-04T12:46:15.631557Z", "id": "CVE-2026-4881", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-06-04T13:05:54.396Z" } } ] } }