MongoDB Server may experience an out-of-memory failure while evaluating expressions that produce deeply nested documents. The issue arises in recursive functions because the server does not periodically check the depth of the expression.
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Fixes

Solution

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Workaround

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History

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

Type Values Removed Values Added
Metrics ssvc

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


Tue, 10 Feb 2026 19:15:00 +0000

Type Values Removed Values Added
Description MongoDB Server may experience an out-of-memory failure while evaluating expressions that produce deeply nested documents. The issue arises in recursive functions because the server does not periodically check the depth of the expression.
Title Mongod can run out of stack memory when expressions create deeply nested documents
Weaknesses CWE-674
References
Metrics cvssV3_1

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

cvssV4_0

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


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mongodb

Published:

Updated: 2026-02-10T19:17:02.296Z

Reserved: 2026-02-03T18:21:52.859Z

Link: CVE-2026-1849

cve-icon Vulnrichment

Updated: 2026-02-10T19:16:31.309Z

cve-icon NVD

Status : Received

Published: 2026-02-10T19:15:51.477

Modified: 2026-02-10T19:15:51.477

Link: CVE-2026-1849

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses