AWS Cognito Flaw Grants Deployment Admin Privileges
The National Vulnerability Database has disclosed CVE-2026-6912, a high-severity vulnerability in AWS Ops Wheel. This flaw, rated 8.8 CVSS, allows remote authenticated users to escalate privileges within Cognito User Pool configurations. Specifically, an attacker can craft an UpdateUserAttributes API call to set the custom:deployment_admin attribute, effectively gaining deployment admin rights and full control over Cognito user accounts.
This isn’t some theoretical bypass; it’s a direct path to administrative control. The core issue, classified as CWE-915 (Improperly Controlled Modification of Dynamically-Determined Object Attributes), highlights a critical flaw in how AWS Ops Wheel handled dynamic attribute changes. For organizations leveraging AWS Cognito, this means a rogue authenticated user could seize control of user management, leading to account takeover, data manipulation, or denial of service.
Remediation is straightforward but critical: organizations using AWS Ops Wheel must redeploy from the updated repository. Any forked or derivative codebases must be patched to incorporate the fixes. Ignoring this is an open invitation for an insider threat or compromised account to wreak havoc on your user management infrastructure.
What This Means For You
- If your organization uses AWS Ops Wheel with Cognito User Pools, you must immediately verify your deployment version. Patching is non-negotiable here. Audit your Cognito user pool configurations and logs for any unauthorized changes to `custom:deployment_admin` attributes, especially from authenticated but non-admin users.
Related ATT&CK Techniques
🛡️ Detection Rules
3 rules · 6 SIEM formats3 detection rules auto-generated for this incident, mapped to MITRE ATT&CK. Sigma YAML is free — export to any SIEM format via the Intel Bot.
AWS Cognito User Pool Privilege Escalation via UpdateUserAttributes - CVE-2026-6912
title: AWS Cognito User Pool Privilege Escalation via UpdateUserAttributes - CVE-2026-6912
id: scw-2026-04-24-ai-1
status: experimental
level: high
description: |
Detects the specific API call pattern used to exploit CVE-2026-6912. An authenticated user crafts an UpdateUserAttributes API call to set the 'custom:deployment_admin' attribute, escalating their privileges within AWS Cognito User Pools. This rule looks for POST requests to the '/oauth2/idpresponse' endpoint with 'custom:deployment_admin' in the query string and a successful 200 status code.
author: SCW Feed Engine (AI-generated)
date: 2026-04-24
references:
- https://shimiscyberworld.com/posts/nvd-CVE-2026-6912/
tags:
- attack.privilege_escalation
- attack.t1078.004
logsource:
category: authentication
detection:
selection:
cs-uri|contains:
- '/oauth2/idpresponse'
cs-method|exact:
- 'POST'
cs-uri-query|contains:
- 'custom:deployment_admin'
sc-status|exact:
- '200'
condition: selection
falsepositives:
- Legitimate administrative activity
Source: Shimi's Cyber World · License & reuse
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2026-6912 | Privilege Escalation | AWS Ops Wheel before PR #165 |
| CVE-2026-6912 | Privilege Escalation | Cognito User Pool configuration |
| CVE-2026-6912 | Privilege Escalation | UpdateUserAttributes API call setting custom:deployment_admin attribute |
Written by SCW Vulnerability Desk
Source & Attribution
| Source Platform | NVD |
| Channel | National Vulnerability Database |
| Published | April 24, 2026 at 20:16 UTC |
This content was AI-rewritten and enriched by Shimi's Cyber World based on the original source. All intellectual property rights remain with the original author.
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