A bug in query analysis processing of the $vectorSearch aggregation stage for Queryable Encryption (QE) or Client-Side Field Level Encryption (CSFLE) results in literal values for encrypted fields within the $vectorSearch stage filter expressions to be sent to the server as plaintext instead of ciphertext.
{
"severity": "High",
"cpes": [
"cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:*"
]
}