CVEvulnerability

CVE-2020-1758

5.9 MEDIUM Published 2020-05-15 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2020-05-15
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
5.3 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
CVSS 3.1 ([email protected])
5.9 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS 2.0 ([email protected])
4.3 MEDIUM — AV:N/AC:M/Au:N/C:P/I:N/A:N
Weaknesses
CWE-295, CWE-297

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.

Affected configurations

• redhat keycloak (< 10.0.0) • redhat openstack 10

Related

Weakness · CWE (2)

  • CWE-295 Improper Certificate Validation weakness
  • CWE-297 Improper Validation of Certificate with Host Mismatch weakness

References