Description
In MongoDB Server, an authenticated user with insert privileges on a collection could craft a command with specially constructed encryption-related parameters to redirect internal Queryable Encryption metadata writes to metadata belonging to other encrypted collections within the same database. The server’s authorization layer validated only the user-facing target collection namespace, while subsequent internal writes derived from client-supplied parameters were performed with elevated internal privileges, bypassing the original caller’s permission scope. This could allow unauthorized writes into another collection’s Queryable Encryption metadata, potentially corrupting encrypted index state and compaction operations.
Published: 2026-11-10
Score: 2.3 Low
EPSS: n/a
KEV: No
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History

Tue, 10 Nov 2026 20:15:00 +0000

Type Values Removed Values Added
Description In MongoDB Server, an authenticated user with insert privileges on a collection could craft a command with specially constructed encryption-related parameters to redirect internal Queryable Encryption metadata writes to metadata belonging to other encrypted collections within the same database. The server’s authorization layer validated only the user-facing target collection namespace, while subsequent internal writes derived from client-supplied parameters were performed with elevated internal privileges, bypassing the original caller’s permission scope. This could allow unauthorized writes into another collection’s Queryable Encryption metadata, potentially corrupting encrypted index state and compaction operations.
Title Authorization bypass via redirected FLE2 state-collection writes in encrypted CRUD path
Weaknesses CWE-862
References
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N'}

cvssV4_0

{'score': 2.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N'}

Subscriptions

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cve-icon MITRE

Status: PUBLISHED

Assigner: mongodb

Published:

Updated: 2026-11-10T20:04:26.824Z

Reserved: 2026-11-02T22:54:14.893Z

Link: CVE-2026-120805

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-11-10T20:18:50.740

Modified: 2026-11-10T20:18:50.740

Link: CVE-2026-120805

cve-icon Redhat

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cve-icon OpenCVE Enrichment

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Weaknesses