---
id: CVE-2026-120953
title: >-
  Atlas SQL JDBC Driver <=4.0.0: OIDC discovery endpoints not scheme-validated -
  attacker-controlled URI dispatched to OS protocol handler
summary: >-
  A URI redirection weakness exists in the authentication component of the Atlas
  SQL JDBC Driver. During an interactive sign-in flow the driver accepts
  endpoint addresses supplied by the remote endpoint it is pointed at without
  validating …
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N'
cvssSource: cna
cwe:
  - CWE-601
vendor: MongoDB
product: Atlas SQL JDBC Driver
affected:
  - atlas_sql_jdbc_driver >= 2.1.2 < 4.0.1
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-03T19:41:37.311409Z'
published: '2026-11-03'
updated: '2026-11-03'
sourceUpdated: '2026-11-03T19:41:48.806Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-120953'
references:
  - url: 'https://www.mongodb.com/docs/sql-interface/changelog/'
  - url: 'https://jira.mongodb.org/browse/SQL-3539'
tags:
  - cve.org
epss: 0.00243
epssPercentile: 0.15551
ingestedAt: '2026-11-05T20:33:06.402Z'
---

## Overview

A URI redirection weakness exists in the authentication component of the Atlas SQL JDBC Driver. During an interactive sign-in flow the driver accepts endpoint addresses supplied by the remote endpoint it is pointed at without validating their scheme, and passes the resulting address to the local default protocol handler. An unauthenticated remote party that controls the endpoint a user elects to connect to may cause an address of its choosing to be opened on the user's system; user interaction is required.

## Affected

- `atlas_sql_jdbc_driver >= 2.1.2 < 4.0.1`

## Remediation

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