CVE-2026-81523 — Cross-tenant database retargeting via dot/NUL injection in namespace strings in libmongocrypt

CVE-2026-81523

Cross-tenant database retargeting via dot/NUL injection in namespace strings in libmongocrypt PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
MongoDB / libmongocrypt	affected 1.0.0 before 1.20.3

CWE

CWE-74

References

https://jira.mongodb.org/browse/MONGOCRYPT-977
https://github.com/mongodb/libmongocrypt/releases/tag/1.20.3

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.