Sceawere

Vulnerability Detail

CVE-2026-93394 Verified Sceawere Triage Sources: NVD / CISA KEV

Vulnerability Metadata

Severity
Low
Score / CVSS
3.7
Creation Date
1d ago
Vendor
MongoDB Inc.
Product
C Driver
Attack Type
CWE-303: Incorrect Implementation of Authentication Algorithm
Vector String
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack Complexity
HIGH

Narrative and Response

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.

Executive Summary

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Technical Details

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Mitigations

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References

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Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

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Additional Metadata

{
  "score": "3.7",
  "pubDate": "2026-09-17T21:17:56.307Z",
  "pubdate": "2026-09-17T21:17:56.307Z"
}