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.
History

Fri, 28 Aug 2026 11:00:00 +0000

Type Values Removed Values Added
First Time appeared Mongodb
Mongodb libmongocrypt
Vendors & Products Mongodb
Mongodb libmongocrypt

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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: mongodb

Published: 2026-08-27T18:32:24.206Z

Updated: 2026-08-28T15:51:12.001Z

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

Link: CVE-2026-81523

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

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

Modified: 2026-08-28T21:16:15.740

Link: CVE-2026-81523

cve-icon Redhat

No data.