MongoDB Schema Manager & Atlas ODBC Driver OIDC Scheme Validation Flaw
CVE-2026-19503 Published on August 12, 2026
Insufficient OIDC endpoint validation could invoke unintended local protocol handlers
MongoDB Schema Manager and MongoDB Atlas SQL ODBC Driver do not validate the scheme of the authorization and token endpoints returned by an OIDC issuer's discovery document. A user induced to connect to an uncontrolled MongoDB deployment using MONGODB-OIDC authentication may have an uncontrolled URI dispatched to their operating system's default protocol handler, potentially exposing credentials or, under certain conditions, resulting in code execution in the user's context.
Vulnerability Analysis
CVE-2026-19503 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity and availability.
Weakness Type
Improper Input Validation
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
Products Associated with CVE-2026-19503
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Affected Versions
MongoDB Atlas SQL ODBC Driver:- Version 1.0.0 and below 2.0.9 is affected.
- Version 1.0.1 and below 1.2.1 is affected.