MongoDB Database Tools mongorestore incorrectly URL-decodes an original collection name read from metadata when the corresponding dump filename has been truncated. A database user who can create and populate a suitably encoded collection can cause a later authorized directory restore to write those documents into a different collection that the user cannot modify directly. When both collection names resolve to the same destination, backed-up documents may be omitted; use of --drop can also replace the unintended destination collection. Exploitation requires an operator to restore the affected collection from a directory dump with write access to the destination. This issue affects MongoDB Database Tools versions 100.0.2 through versions before 100.20.1.
Advisories

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Fixes

Solution

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Workaround

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History

Tue, 03 Nov 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Tue, 03 Nov 2026 18:15:00 +0000

Type Values Removed Values Added
First Time appeared Mongodb
Mongodb database Tools
Vendors & Products Mongodb
Mongodb database Tools

Tue, 03 Nov 2026 16:30:00 +0000

Type Values Removed Values Added
Description MongoDB Database Tools mongorestore incorrectly URL-decodes an original collection name read from metadata when the corresponding dump filename has been truncated. A database user who can create and populate a suitably encoded collection can cause a later authorized directory restore to write those documents into a different collection that the user cannot modify directly. When both collection names resolve to the same destination, backed-up documents may be omitted; use of --drop can also replace the unintended destination collection. Exploitation requires an operator to restore the affected collection from a directory dump with write access to the destination. This issue affects MongoDB Database Tools versions 100.0.2 through versions before 100.20.1.
Title mongorestore may restore encoded collection names into an unintended collection
Weaknesses CWE-174
References
Metrics cvssV3_1

{'score': 3.7, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:L'}

cvssV4_0

{'score': 2.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mongodb

Published:

Updated: 2026-11-03T17:38:44.072Z

Reserved: 2026-10-30T14:08:01.050Z

Link: CVE-2026-119674

cve-icon Vulnrichment

Updated: 2026-11-03T17:38:39.381Z

cve-icon NVD

Status : Received

Published: 2026-11-03T17:18:06.967

Modified: 2026-11-03T18:17:56.213

Link: CVE-2026-119674

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-03T19:00:21Z

Weaknesses