---
id: CVE-2026-85210
title: >-
  Oppia's AdminRoleHandler GET endpoint in core/controllers/admin.py is
  decorated with open_access, allowing any registered user to enumerate
  privileged accounts and roles
summary: >-
  Oppia's AdminRoleHandler GET endpoint in core/controllers/admin.py is
  decorated with open_access, allowing any registered user to enumerate
  privileged accounts and roles. Attackers can query the endpoint with
  filter_criterion parameters …
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N'
cwe:
  - CWE-862
published: '2026-09-03'
updated: '2026-09-10'
sourceUpdated: '2026-09-10T15:53:23.707'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-85210'
references:
  - url: 'https://github.com/oppia/oppia'
    label: disclosure@vulncheck.com
  - url: 'https://github.com/oppia/oppia/blob/v3.5.2/core/controllers/admin.py'
    label: disclosure@vulncheck.com
  - url: 'https://github.com/oppia/oppia/issues/26652'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/oppia-through-3.5.2-missing-authorization-on-adminrolehandler-get
    label: disclosure@vulncheck.com
  - url: 'https://github.com/oppia/oppia/issues/26652'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - cve.org
  - exploit-available
epss: 0.00342
epssPercentile: 0.25043
ingestedAt: '2026-09-05T20:44:36.508Z'
vendor: oppia
product: oppia
affected:
  - oppia <= 3.5.2
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-05T01:23:09.690005Z'
---

## Overview

Oppia's AdminRoleHandler GET endpoint in core/controllers/admin.py is decorated with open_access, allowing any registered user to enumerate privileged accounts and roles. Attackers can query the endpoint with filter_criterion parameters to retrieve usernames holding specific roles, banned flags, and managed topic identifiers without authorization.

## Remediation

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