Incorrect Implementation of Authentication Algorithm

Overview Affected versions of this package are vulnerable to Incorrect Implementation of Authentication Algorithm due to improper validation in the SCRAM authentication process. An attacker can intercept authentication handshakes and obtain the client proof by injecting a crafted...

CVE-2026-93394

A flaw in libmongoc's SCRAM authentication implementation caused the client to continue the authentication handshake and transmit the client proof even when a nonce mismatch was detected in the server's first message. An unauthorized party with a man-in-the-middle position could exploit this by...