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CVE

CVE-2020-1758

A flaw was found in Keycloak in versions before 10.0.0, where it does not perform the TLS hostname verification while se

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.

MEDIUM · CVSS 5.3 EPSS 0.00254
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  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0

Affected Products & Versions

2
redhat openstackall versions

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
Maven org.keycloak:keycloak-parent MODERATE fixed in 10.0.0

Scoring & Timeline

5.3
MEDIUM · CVSS v3.1 · secalert@redhat.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD15 May 2020 · 07:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N

Vendor Advisories

4
rhsaRHSA-2020:2112Moderate
rhsaRHSA-2020:2107Important
rhsaRHSA-2020:2108Important
rhsaRHSA-2020:2106Important
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://issues.redhat.com/browse/KEYCLOAK-13285Permissions RequiredVendor Advisory
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