{"id":"CVE-2026-101169","state":"PUBLISHED","title":"In affected versions of Octopus Server, an authenticated user with permissions to edit an Environment or Project can set specifically crafted JSON content for the object. Insecure ","description":"In affected versions of Octopus Server, an authenticated user with permissions to edit an Environment or Project can set specifically crafted JSON content for the object. Insecure deserialization of this content allows the user to execute arbitrary code in the Octopus Server process.","publishedAt":"2026-09-29T07:49:29.618Z","updatedAt":"2026-09-29T16:46:34.454Z","severity":{"score":8.7,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","source":"Octopus"},"assigner":"Octopus","products":["Octopus Deploy Octopus Server"],"affected":[{"vendor":"Octopus Deploy","product":"Octopus Server","defaultStatus":"unaffected","versions":[{"version":"2019.4.1","status":"affected","lessThan":"2026.1.11781","versionType":"custom"},{"version":"2026.2.0","status":"affected","lessThan":"2026.2.13441","versionType":"custom"},{"version":"2026.3.0","status":"affected","lessThan":"2026.3.15829","versionType":"custom"}],"platforms":["Windows","Linux"]}],"references":["https://advisories.octopus.com/post/2026/sa2026-10"],"weaknesses":["CWE-502"],"ingestedAt":"2026-10-29T20:10:13.529Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/101xxx/CVE-2026-101169.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-101169","state":"PUBLISHED","datePublished":"2026-09-29T07:49:29.618Z","dateUpdated":"2026-09-29T16:46:34.454Z","assignerShortName":"Octopus","assignerOrgId":"6f4f8c89-ef06-4bae-a2a5-6734ddf76272","dateReserved":"2026-09-28T09:09:50.229Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"In affected versions of Octopus Server, an authenticated user with permissions to edit an Environment or Project can set specifically crafted JSON content for the object. Insecure deserialization of this content allows the user to execute arbitrary code in the Octopus Server process."}],"affected":[{"vendor":"Octopus Deploy","product":"Octopus Server","defaultStatus":"unaffected","versions":[{"version":"2019.4.1","status":"affected","lessThan":"2026.1.11781","versionType":"custom"},{"version":"2026.2.0","status":"affected","lessThan":"2026.2.13441","versionType":"custom"},{"version":"2026.3.0","status":"affected","lessThan":"2026.3.15829","versionType":"custom"}],"platforms":["Windows","Linux"]}],"references":[{"url":"https://advisories.octopus.com/post/2026/sa2026-10"}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","subConfidentialityImpact":"NONE","vulnIntegrityImpact":"HIGH","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":"HIGH","baseScore":8.7,"vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-502","lang":"en","description":"CWE-502: Deserialization of Untrusted Data","type":"CWE"}]}],"providerMetadata":{"shortName":"Octopus","orgId":"6f4f8c89-ef06-4bae-a2a5-6734ddf76272","dateUpdated":"2026-09-29T07:49:29.618Z"},"credits":[{"lang":"en","value":"This vulnerability was found by Nathan Willoughby","type":"finder"}],"source":{"discovery":"INTERNAL"},"x_generator":{"engine":"Vulnogram 1.0.5"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-29T16:46:21.130403Z","id":"CVE-2026-101169","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-29T16:46:34.454Z"}}]}}}