CVE-2025-8419
Org.keycloak/keycloak-services: keycloak smtp inject vulnerability
CVSS Score
5.3
EPSS Score
0.0%
EPSS Percentile
0th
A vulnerability was found in Keycloak-services. Special characters used during e-mail registration may perform SMTP Injection and unexpectedly send short unwanted e-mails. The email is limited to 64 characters (limited local part of the email), so the attack is limited to very shorts emails (subject and little data, the example is 60 chars). This flaw's only direct consequence is an unsolicited email being sent from the Keycloak server. However, this action could be a precursor for more sophisticated attacks.
| CWE | CWE-93 |
| Vendor | keycloak |
| Product | keycloak |
| Published | Aug 6, 2025 |
| Last Updated | Jan 8, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None
Affected Versions
Keycloak / keycloak
0 < 26.3.3
Red Hat / Red Hat build of Keycloak 26.0
All versions affected Red Hat / Red Hat build of Keycloak 26.0
All versions affected Red Hat / Red Hat build of Keycloak 26.0
All versions affected Red Hat / Red Hat build of Keycloak 26.0
All versions affected Red Hat / Red Hat build of Keycloak 26.2
All versions affected Red Hat / Red Hat build of Keycloak 26.2
All versions affected Red Hat / Red Hat build of Keycloak 26.2
All versions affected Red Hat / Red Hat build of Keycloak 26.2
All versions affected References
access.redhat.com: https://access.redhat.com/errata/RHSA-2025:15336 access.redhat.com: https://access.redhat.com/errata/RHSA-2025:15337 access.redhat.com: https://access.redhat.com/errata/RHSA-2025:15338 access.redhat.com: https://access.redhat.com/errata/RHSA-2025:15339 access.redhat.com: https://access.redhat.com/security/cve/CVE-2025-8419 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2385776