Vulnerabilities in pkg:pypi/nautobot

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-q4c5-2j6f-r476",
  "modified" : "2026-09-22T20:37:33Z",
  "published" : "2026-09-22T20:37:33Z",
  "aliases" : [ "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.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "nautobot"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "3.0.0"
      }, {
        "fixed" : "3.1.8"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/nautobot/nautobot/security/advisories/GHSA-q4c5-2j6f-r476"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/nautobot/nautobot/commit/8682707d0391cbfd7694e3276127b78dc9cf29d8"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/nautobot/nautobot"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/nautobot/nautobot/releases/tag/v3.1.8"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-285", "CWE-639" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-09-22T20:37:33Z",
    "nvd_published_at" : null
  }
}