CVE-2020-1758

MediumCVSS 5.9/10Last modified Jun 17, 2026

Description

A flaw was found in Keycloak in versions before 10.0.0, where it does not perform the TLS hostname verification while sending emails using the SMTP server. This flaw allows an attacker to perform a man-in-the-middle (MITM) attack.

Metrics

CVSS 3.1 5.9/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Weakness enumeration

CWE-297 CWE-295

Affected software

No affected versions have been published.

Timeline

Published: May 15, 2020
Last modified: Jun 17, 2026
NVD status: Modified

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