CVE-2026-106434

The explicit decryption component of MongoDB libmongocrypt can return an unrecognized encrypted payload unchanged instead of returning a decryption error. An actor who can modify stored encrypted fields, such as a database writer, server, or network intermediary, can cause an affected application to process the supplied bytes as decrypted plaintext.

CVSS v3 4.3 MEDIUM

4.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://jira.mongodb.org/browse/MONGOCRYPT-966

Configurations

No configuration.

History

08 Oct 2026, 19:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-08 19:16

Updated : 2026-10-08 20:49

NVD link : CVE-2026-106434

Mitre link : CVE-2026-106434

CVE.ORG link : CVE-2026-106434

JSON object : View

Products Affected

No product.

CWE

CWE-354

Improper Validation of Integrity Check Value

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