---
id: CVE-2026-85513
title: StackStorm st2 NoOp RBAC backend actionexecutions.py privileges management
summary: >-
  A weakness has been identified in StackStorm st2 up to 3.9.0. This issue
  affects the function assert_user_is_admin_if_user_query_param_is_provided of
  the file st2api/st2api/controllers/v1/actionexecutions.py of the component
  NoOp RBAC ba…
severity: medium
cvss: 6.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R'
cvssSource: cna
cwe:
  - CWE-269
  - CWE-266
vendor: StackStorm
product: st2
affected:
  - st2 3.0
  - st2 3.1
  - st2 3.2
  - st2 3.3
  - st2 3.4
  - st2 3.5
  - st2 3.6
  - st2 3.7
  - st2 3.8
  - st2 3.9.0
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-08T16:43:09.698648Z'
exploitAvailable: true
published: '2026-09-04'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T16:43:21.121Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-85513'
references:
  - url: 'https://vuldb.com/vuln/398678'
    label: >-
      VDB-398678 | StackStorm st2 NoOp RBAC backend actionexecutions.py
      privileges management
  - url: 'https://vuldb.com/vuln/398678/cti'
    label: 'VDB-398678 | CTI Indicators (IOB, IOC, TTP, IOA)'
  - url: 'https://vuldb.com/cve/CVE-2026-85513'
    label: CVE-2026-85513 | CVE Analysis and Report
  - url: 'https://vuldb.com/submit/894916'
    label: 'Submit #894916 | StackStorm st2 3.9.0  Improper Privilege Management'
  - url: 'https://github.com/StackStorm/st2/issues/6379'
  - url: 'https://github.com/StackStorm/st2/'
tags:
  - cve.org
  - exploit-available
epss: 0.00248
epssPercentile: 0.1648
ingestedAt: '2026-09-08T19:08:49.673Z'
---

## Overview

A weakness has been identified in StackStorm st2 up to 3.9.0. This issue affects the function assert_user_is_admin_if_user_query_param_is_provided of the file st2api/st2api/controllers/v1/actionexecutions.py of the component NoOp RBAC backend. This manipulation of the argument User causes improper privilege management. The attack is possible to be carried out remotely. The exploit has been made available to the public and could be used for attacks. Prior advisory CVE-2022-44009 was reported as a follow-up on the same sink, but this issue is distinct: it needs no Jinja RBAC und affects default install with RBAC disabled. The project was informed of the problem early through an issue report but has not responded yet.

## Affected

- `st2 3.0`
- `st2 3.1`
- `st2 3.2`
- `st2 3.3`
- `st2 3.4`
- `st2 3.5`
- `st2 3.6`
- `st2 3.7`
- `st2 3.8`
- `st2 3.9.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.