Description
A missing input-validation issue in MongoDB libmongocrypt's automatic-encryption context setup allows a caller-supplied database identifier to be accepted without sanitization. The resulting impact is limited to incorrect schema selection, which may lead to limited disclosure or modification of information handled by the application.
Published: 2026-08-27
Score: 2 Low
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
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History

Thu, 27 Aug 2026 18:00:00 +0000

Type Values Removed Values Added
Description A missing input-validation issue in MongoDB libmongocrypt's automatic-encryption context setup allows a caller-supplied database identifier to be accepted without sanitization. The resulting impact is limited to incorrect schema selection, which may lead to limited disclosure or modification of information handled by the application.
Title Cross-tenant database retargeting via dot/NUL injection in namespace strings in libmongocrypt
Weaknesses CWE-74
References
Metrics cvssV3_1

{'score': 4.4, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N'}

cvssV4_0

{'score': 2, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N'}

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cve-icon MITRE

Status: PUBLISHED

Assigner: mongodb

Published:

Updated: 2026-08-27T20:42:00.300Z

Reserved: 2026-08-26T22:13:50.099Z

Link: CVE-2026-81523

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-27T20:18:50.633

Modified: 2026-08-28T00:18:20.730

Link: CVE-2026-81523

cve-icon Redhat

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cve-icon OpenCVE Enrichment

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Weaknesses
  • CWE-74

    Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')