Analysis and contextual insights are available on OpenCVE Cloud.
No vendor fix or workaround currently provided.
Additional remediation guidance may be available on OpenCVE Cloud.
Tracking
Sign in to view the affected projects.
No advisories yet.
| Link | Providers |
|---|---|
| https://jira.mongodb.org/browse/CDRIVER-6315 |
|
Fri, 18 Sep 2026 12:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Mongodb
Mongodb c Driver |
|
| Vendors & Products |
Mongodb
Mongodb c Driver |
Thu, 17 Sep 2026 20:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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 injecting a crafted server-first-message containing a controlled salt and low iteration count, then capturing the resulting client proof to perform offline password cracking. This vulnerability is mitigated by TLS, which is standard in production deployments. | |
| Title | libmongoc SCRAM client nonce-validation bypass | |
| Weaknesses | CWE-303 | |
| References |
| |
| Metrics |
cvssV3_1
|
Status: PUBLISHED
Assigner: mongodb
Published:
Updated: 2026-09-18T14:31:41.209Z
Reserved: 2026-09-17T20:11:00.595Z
Link: CVE-2026-93394
No data.
Status : Received
Published: 2026-09-17T21:17:56.307
Modified: 2026-09-18T15:17:18.347
Link: CVE-2026-93394
No data.
OpenCVE Enrichment
Updated: 2026-09-18T12:15:06Z
-
CWE-303
Incorrect Implementation of Authentication Algorithm