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CVE PROGRAM SOURCE RECORD5.3 Medium

CVE-2026-106434

Unrecognized payload acceptance in explicit decryption in MongoDB libmongocrypt

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

MongoDB libmongocrypt

Default version status: unaffected

  • 1.5.0 to < 1.20.5affected

References