SEPTEMBER 18, 2026
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Case File

CVE-2026-81518

HIGH · CVSS 7.5 EPSS 0.15%

Source: NVD + CISA KEV + EPSS · Published 2026-08-28 · Last synced 2026-09-18

CyberRota Analysis

AI-Generated

MongoDB installations using mongosqld with a client certificate authority file are vulnerable due to the listener's failure to enforce client certificate requirements during the TLS handshake. This flaw allows unauthorized clients to connect and potentially access sensitive data, posing a significant risk to deployments that rely solely on client certificates for user authentication. Organizations utilizing MongoDB in environments where client certificates are critical for security should prioritize remediation efforts to mitigate this vulnerability.

CVE
CVE-2026-81518
Severity
HIGH
CVSS
7.5
EPSS
0.15%
MongoDB

Original NVD Description

When mongosqld is configured with a client certificate authority file, the listener requests a client certificate during the TLS handshake but does not require one, so a client that presents no certificate is still accepted. In deployments that rely on client certificates as the sole means of identifying users, a remote party with network access to the listener can therefore establish a session and read the MongoDB data exposed through the connector.