Medium severity5.3NVD Advisory· Published May 15, 2020· Updated Jun 17, 2026

CVE-2020-1758

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected packages

Versions sourced from the GitHub Security Advisory.

Package	Affected versions	Patched versions
org.keycloak:keycloak-parentMaven	< 10.0.0	10.0.0

Affected products

Red Hat/Keycloak2 versions
cpe:2.3:a:redhat:keycloak:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:redhat:keycloak:*:*:*:*:*:*:*:*range: <10.0.0
- (no CPE)range: keycloak versions before 10.0.0
Red Hat/Openstack
cpe:2.3:a:redhat:openstack:10:*:*:*:*:*:*:*
ghsa-coords
pkg:maven/org.keycloak/keycloak-parent
Range: < 10.0.0

Patches

Vulnerability mechanics

References

bugzilla.redhat.com/show_bug.cginvdIssue TrackingVendor AdvisoryWEB
github.com/advisories/GHSA-c597-f74m-jgc2ghsaADVISORY
issues.redhat.com/browse/KEYCLOAK-13285nvdPermissions RequiredVendor AdvisoryWEB
nvd.nist.gov/vuln/detail/CVE-2020-1758ghsaADVISORY

News mentions

No linked articles in our index yet.

cvss	0.345
epss	0.001
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000