CVE-2026-120826

Improper Authorization in MongoDB Server Sharded View Definition Handling Leads to Cross-Database Unauthorized Access

Published Nov 10, 2026 CVSS 4.0 · 7.1 High EPSS < 1% KEV · Not listed
Description
An authorization flaw in the aggregation and view-definition handling of sharded deployments may allow a user holding only basic read-write privileges on a single database to define a view whose underlying processing is not fully subjected to privilege checking. Reading that view may result in unintended access to data belonging to other databases held on the same shard.

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
Mongodb mongodb Server
Vendors & Products Mongodb
Mongodb mongodb Server
Type Values Removed Values Added
Description An authorization flaw in the aggregation and view-definition handling of sharded deployments may allow a user holding only basic read-write privileges on a single database to define a view whose underlying processing is not fully subjected to privilege checking. Reading that view may result in unintended access to data belonging to other databases held on the same shard.
Title Improper Authorization in MongoDB Server Sharded View Definition Handling Leads to Cross-Database Unauthorized Access
Weaknesses CWE-863
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'}

cvssV4_0

{'score': 7.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
mongodb
Published
Updated
Nov 10, 2026, 8:22 PM
Reserved
Nov 2, 2026, 10:54 PM
Status
Awaiting Analysis
Published
Nov 10, 2026, 9:19 PM
Modified
Nov 10, 2026, 10:08 PM