{"affected":[{"defaultStatus":"unaffected","platforms":["Windows","Linux"],"product":"Octopus Server","source":"CNA: Octopus","vendor":"Octopus Deploy","versions":[{"lessThan":"2026.2.13503","status":"affected","version":"2025.3.11571","versionType":"custom"},{"lessThan":"2026.3.15894","status":"affected","version":"2026.3.0","versionType":"custom"}]}],"cveId":"CVE-2026-116835","cwes":["CWE-915"],"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.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":8.7,"severity":"high","source":"CNA: Octopus","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","version":"4.0"}],"modifiedAt":1794489833793,"publishedAt":1794489833793,"references":[{"source":"CNA: Octopus","tags":[],"url":"https://advisories.octopus.com/post/2026/sa2026-22"}],"remediation":[],"revision":"6f96b1aa516ad9d4ce464186d82e27a3d28b417dab4db4a84e47cbf774c308cf","sources":[{"modifiedAt":1794489833793,"name":"CNA: Octopus","retrievedAt":1794492525968,"url":"https://www.cve.org/CVERecord?id=CVE-2026-116835"}],"ssvc":null,"status":"published","title":"CVE-2026-116835","updatedAt":1794492525968}