CVE-2026-19503

Insufficient OIDC endpoint validation could invoke unintended local protocol handlers

Published Aug 12, 2026 CVSS 4.0 · 6.3 Medium EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Mongodb odbc Driver
Mongodb sql Schema Builder Cli
CPEs cpe:2.3:a:mongodb:odbc_driver:*:*:*:*:*:*:*:*
cpe:2.3:a:mongodb:sql_schema_builder_cli:*:*:*:*:*:*:*:*
Vendors & Products Mongodb odbc Driver
Mongodb sql Schema Builder Cli
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Mongodb
Mongodb atlas Sql Odbc Driver
Mongodb schema Builder Cli
Vendors & Products Mongodb
Mongodb atlas Sql Odbc Driver
Mongodb schema Builder Cli
Type Values Removed Values Added
Description 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.
Title Insufficient OIDC endpoint validation could invoke unintended local protocol handlers
Weaknesses CWE-20
References
Metrics cvssV3_1

{'score': 4.8, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N'}

cvssV4_0

{'score': 6.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
mongodb
Published
Updated
Aug 13, 2026, 12:48 PM
Reserved
Aug 10, 2026, 6:59 PM
Status
Analyzed
Published
Aug 12, 2026, 9:17 PM
Modified
Sep 29, 2026, 9:02 PM