{"id":"CVE-2026-116835","aliases":["EUVD-2026-124401","GHSA-x27r-mfxr-pcpj"],"status":"published","title":"In affected versions of Octopus Server, insufficient validation of custom claims on OIDC accounts...","description":"In affected versions of Octopus Server, insufficient validation of custom claims on OIDC accounts allowed a user with permission to edit accounts to cause Octopus Server to issue signed OIDC tokens that impersonate a different project. This could grant access to external systems, such as cloud providers or other Octopus instances, that trust that project's identity.","severity":{"version":"4.0","score":8.7,"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","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-14","score":0.00244,"percentile":0.15716,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-915"],"published":"2026-11-12T13:23:53Z","modified":"2026-11-12T15:32:01Z","products":[{"vendor":"octopus deploy","product":"octopus server"}],"references":[{"url":"https://advisories.octopus.com/post/2026/sa2026-22"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-116835"},{"url":"https://github.com/advisories/GHSA-x27r-mfxr-pcpj"}],"sources":{"cve":[{"id":"CVE-2026-116835","description":"In affected versions of Octopus Server, insufficient validation of custom claims on OIDC accounts allowed a user with permission to edit accounts to cause Octopus Server to issue signed OIDC tokens that impersonate a different project. This could grant access to external systems, such as cloud providers or other Octopus instances, that trust that project's identity.","status":"published","published":"2026-11-12T13:23:53.793Z","modified":"2026-11-12T13:23:53.793Z","cvss":[{"version":"4.0","score":8.7,"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","level":"high","assessor":"cna"}],"cwes":["CWE-915"],"updated_at":"2026-11-12T14:43:40.585109Z"}],"euvd":[{"id":"EUVD-2026-124401","description":"In affected versions of Octopus Server, insufficient validation of custom claims on OIDC accounts allowed a user with permission to edit accounts to cause Octopus Server to issue signed OIDC tokens that impersonate a different project. This could grant access to external systems, such as cloud providers or other Octopus instances, that trust that project's identity.","status":"published","published":"2026-11-12T13:23:53Z","modified":"2026-11-12T13:23:53Z","cvss":[{"version":"4.0","score":8.7,"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","level":"high"}],"updated_at":"2026-11-12T17:34:19.905469Z"}],"ghsa":[{"id":"GHSA-x27r-mfxr-pcpj","title":"In affected versions of Octopus Server, insufficient validation of custom claims on OIDC accounts...","description":"In affected versions of Octopus Server, insufficient validation of custom claims on OIDC accounts allowed a user with permission to edit accounts to cause Octopus Server to issue signed OIDC tokens that impersonate a different project. This could grant access to external systems, such as cloud providers or other Octopus instances, that trust that project's identity.","status":"published","published":"2026-11-12T15:31:56Z","modified":"2026-11-12T15:32:01Z","cvss":[{"version":"4.0","score":8.7,"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"}],"cwes":["CWE-915"],"updated_at":"2026-11-12T15:41:48.145534Z"}],"nvd":[{"id":"CVE-2026-116835","description":"In affected versions of Octopus Server, insufficient validation of custom claims on OIDC accounts allowed a user with permission to edit accounts to cause Octopus Server to issue signed OIDC tokens that impersonate a different project. This could grant access to external systems, such as cloud providers or other Octopus instances, that trust that project's identity.","status":"published","published":"2026-11-12T14:17:23.63Z","modified":"2026-11-12T19:02:35.83Z","cvss":[{"version":"4.0","score":8.7,"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"}],"cwes":["CWE-915"],"updated_at":"2026-11-12T15:31:33.409684Z"}]}}