{"id":"CVE-2026-102478","title":"In affected versions of Octopus Server, an authenticated user with permission to modify roles could bypass the protections preventing access abuse resulting in privilege escalation","summary":"In affected versions of Octopus Server, an authenticated user with permission to modify roles could bypass the protections preventing access abuse resulting in privilege escalation. It was possible for the built-in role to be weakened an…","severity":"high","cvss":8.7,"cvssVector":"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","cwe":["CWE-1289"],"vendor":"Octopus Deploy","product":"Octopus Server","affected":["octopus_server >= 2023.2.945 < 2026.1.11768","octopus_server >= 2026.2.0 < 2026.2.13408","octopus_server >= 2026.3.0 < 2026.3.15816"],"published":"2026-10-07","updated":"2026-10-07","sourceUpdated":"2026-10-07T19:17:31.010","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-102478","references":[{"url":"https://advisories.octopus.com/post/2026/sa2026-11","label":"security@octopus.com"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-07T18:40:08.538496Z"},"cvssSource":"cna","ingestedAt":"2026-10-07T02:28:07.546Z","epss":0.00295,"epssPercentile":0.22057,"slug":"CVE-2026-102478","body":"## Overview\n\nIn affected versions of Octopus Server, an authenticated user with permission to modify roles could bypass the protections preventing access abuse resulting in privilege escalation. It was possible for the built-in role to be weakened and the attacker's account added to a privileged team. This was achievable due to improper validation of unsafe equivalence in inputs.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":47.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}