MEDIUM 6.5 NVD
CVE-2026-107121
A flaw was found in the SMTP email configuration handling of the keycloak-services component. When the STARTTLS option is enabled, Keycloak fails to strictly en
A flaw was found in the SMTP email configuration handling of the keycloak-services component. When the STARTTLS option is enabled, Keycloak fails to strictly enforce an encrypted connection, allowing it to fall back to unencrypted communication if the encryption request is tampered with. An attacker who can intercept network traffic can exploit this to capture sensitive email credentials and message content in plain text.
References
- https://access.redhat.com/security/cve/CVE-2026-107121
- https://bugzilla.redhat.com/show_bug.cgi?id=2547296
This medium severity vulnerability with a CVSS score of 6.5 was published on 2026-10-07 via NVD.
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