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CVE Watch18 sept 2026

CVE-2026-93394

A flaw in libmongoc's SCRAM authentication implementation caused the client to continue the authentication handshake and transmit the client

CVSS

3.7

Bajo

EPSS

0.2%

p9

KEV

—

Exploit Today

3

0-100

Publicado: 17 sept 2026 · Última mod.: 18 sept 2026 · CWE-303

EPSS · 30d
0.2%EPSS · 30 días0.2%
2026-09-182026-09-20
Descripción técnica

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.

Referencias oficiales
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