CVE-2026-59226: Open WebUI Scheduled Automations Continue After Pending-user Vulnerability

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-mvx4-532p-xfm9",
  "modified" : "2026-07-24T16:55:30Z",
  "published" : "2026-07-24T16:55:30Z",
  "aliases" : [ "CVE-2026-59226" ],
  "summary" : "Open WebUI: Scheduled automations continue after pending-user deactivation and stored model ACL revocation",
  "details" : "**Title:** Scheduled automations continue after pending-user deactivation and stored model ACL revocation\n\n### Summary\n\nOpen WebUI documents `pending` as a zero-access role used for new sign-ups and deactivated users, and normal HTTP routes enforce that with `get_verified_user()` (which rejects `pending`), while automation create/update/run routes additionally require the `features.automations` permission. Two paths missed that lifecycle gate, so a deactivated (`pending`) account could keep acting through the background automation scheduler:\n\n1. **Scheduler did not re-gate the owner.** When a stored automation became due, `execute_automation()` rehydrated the owner with `Users.get_user_by_id(...)` and re-entered the chat completion pipeline without re-checking that the owner was still `user`/`admin` or still held `features.automations`. A still-active automation therefore kept running after its owner was deactivated.\n2. **Model ACL only enforced for exact role `user`.** `check_model_access()` applied private-model grants only when `user.role == \"user\"`, so a `pending` principal fell through a branch that denies a normal non-owner `user`.\n\nNet effect: a deactivated account could continue scheduled chat generation through the background worker, consuming the operator's configured model-provider credentials and reaching a stored automation model ID that its current role/ACL state would no longer permit through normal routes.\n\n### Impact\n\nA `pending`/deactivated account continues to execute due scheduled automations after its access has been revoked, consuming the operator's provider credentials, quota and shared capacity, and bypassing the private-model ACL for the automation's stored model ID. Exploitation requires a previously created active automation and a later transition to `pending` (deactivation or approval rollback), so it is bounded and not interactive. It does not grant unauthenticated access, account takeover, code execution, or cross-user data exfiltration.\n\n### Patched\n\nIn 0.10.0:\n\n- `execute_automation()` aborts and records an error unless the rehydrated owner is still `user` or `admin` and (for non-admins) still holds `features.automations`, so a deactivated or de-permissioned owner's due automation no longer runs.\n- `check_model_access()` enforces model ACLs for every non-admin role rather than only the exact role `user`, so a `pending` or otherwise unrecognised role no longer falls through.\n\n### Credits\n\n@rexpository",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "open-webui"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0.9.0"
      }, {
        "fixed" : "0.10.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/open-webui/open-webui/security/advisories/GHSA-mvx4-532p-xfm9"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-59226"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/open-webui/open-webui/pull/26047"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/open-webui/open-webui/commit/920b655f4689e2118de928fbc936f6ebd4fed396"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/open-webui/open-webui"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/open-webui/open-webui/releases/tag/v0.10.0"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-285", "CWE-862", "CWE-863" ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-07-24T16:55:30Z",
    "nvd_published_at" : "2026-07-09T17:17:04Z"
  }
}