{"id":"CVE-2026-83805","aliases":["GHSA-q4c5-2j6f-r476","PYSEC-2026-4111"],"url":"https://o3.security/vulnerability/CVE-2026-83805","summary":"Nautobot: Authorization bypass in approval workflow REST API allows self-approval and unauthorized activation of scheduled jobs","details":"### Impact\nThis is an authorization bypass that escalates into unauthorized server-side job execution.\n\n1. Primary impact - self-approval: The approver checks (approver-group membership, `change` permission on the object under review, one-response-per-user) are enforced only in the `approve`/`deny` actions on `ApprovalWorkflowStage`. The generic `ApprovalWorkflowStageResponse` create endpoint enforces none of them, so a user holding only `extras.add_approvalworkflowstageresponse` can `POST` approved responses directly and drive a stage past its `min_approvers` threshold with no legitimate approver involved. The serializer also exposes `user` and `state` as writable, letting the attacker attribute responses to arbitrary users.\n\n2. Escalated impact  job activation: Because the approval workflow gates a `ScheduledJob`, self-approval does not stop at the approval record. Stage approval cascades through `ApprovalWorkflow.save()` to `on_workflow_approved()`, which sets the target job to enabled/active.\n\n### Patches\n\nFixed in Nautobot v3.1.8\n\n### Workarounds\nRestrict the `extras.add_approvalworkflowstageresponse` permission so that no untrusted user holds it; approval responses should only ever be created via the stage `approve`/`deny` actions. There is no configuration flag that disables the generic create endpoint prior to the patch.","published":"2026-09-22T19:47:42.826Z","modified":"2026-10-21T03:00:28.215082032Z","cvss":{"score":6.4,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"PyPI","name":"nautobot","fixedVersion":"3.1.8"}],"fix":{"url":"https://github.com/nautobot/nautobot/commit/8682707d0391cbfd7694e3276127b78dc9cf29d8","label":"nautobot/nautobot@8682707"},"references":[{"type":"WEB","url":"https://github.com/nautobot/nautobot/releases/tag/v3.1.8"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/83xxx/CVE-2026-83805.json"},{"type":"ADVISORY","url":"https://github.com/nautobot/nautobot/security/advisories/GHSA-q4c5-2j6f-r476"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-83805"},{"type":"FIX","url":"https://github.com/nautobot/nautobot/commit/8682707d0391cbfd7694e3276127b78dc9cf29d8"},{"type":"PACKAGE","url":"https://github.com/nautobot/nautobot"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-21T03:00:28.215082032Z"}}