Org.keycloak/keycloak-services: keycloak smtp inject vulnerability
Summary
| CVE | CVE-2025-8419 |
|---|---|
| State | PUBLISHED |
| Assigner | redhat |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2025-08-06 17:15:38 UTC |
| Updated | 2026-08-08 18:16:54 UTC |
| Description | 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. |
Risk And Classification
Primary CVSS: v3.1 5.3 MEDIUM from [email protected]
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
EPSS: 0.004110000 probability, percentile 0.338600000 (date 2026-08-08)
Problem Types: CWE-93 | CWE-93 Improper Neutralization of CRLF Sequences ('CRLF Injection')
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Secondary | 5.3 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
| 3.1 | [email protected] | Secondary | 5.3 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
| 3.1 | CNA | CVSS | 5.3 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
NoneUser Interaction
NoneScope
UnchangedConfidentiality
NoneIntegrity
LowAvailability
NoneCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
NVD Known Affected Configurations (CPE 2.3)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Keycloak | Keycloak | affected 26.3.3 semver | Not specified |
| CNA | Red Hat | Red Hat Build Of Keycloak 26.0 | Not specified | Not specified |
| CNA | Red Hat | Red Hat Build Of Keycloak 26.0 | unaffected 26.0.15-1 * rpm | Not specified |
| CNA | Red Hat | Red Hat Build Of Keycloak 26.0 | unaffected 26.0-18 * rpm | Not specified |
| CNA | Red Hat | Red Hat Build Of Keycloak 26.0 | unaffected 26.0-19 * rpm | Not specified |
| CNA | Red Hat | Red Hat Build Of Keycloak 26.2 | Not specified | Not specified |
| CNA | Red Hat | Red Hat Build Of Keycloak 26.2 | unaffected 26.2.8-1 * rpm | Not specified |
| CNA | Red Hat | Red Hat Build Of Keycloak 26.2 | unaffected 26.2-8 * rpm | Not specified |
| CNA | Red Hat | Red Hat Build Of Keycloak 26.2 | unaffected 26.2-8 * rpm | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| access.redhat.com/errata/RHSA-2025:15339 | [email protected] | access.redhat.com | |
| bugzilla.redhat.com/show_bug.cgi | [email protected] | bugzilla.redhat.com | Issue Tracking, Vendor Advisory |
| access.redhat.com/errata/RHSA-2025:15338 | [email protected] | access.redhat.com | |
| access.redhat.com/errata/RHSA-2025:15337 | [email protected] | access.redhat.com | |
| access.redhat.com/errata/RHSA-2025:15336 | [email protected] | access.redhat.com | |
| access.redhat.com/security/cve/CVE-2025-8419 | [email protected] | access.redhat.com | Vendor Advisory |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
Additional Advisory Data
| Source | Time | Event |
|---|---|---|
| CNA | 2025-07-31T14:11:31.674Z | Reported to Red Hat. |
| CNA | 2025-08-06T00:00:00.000Z | Made public. |
Workarounds
CNA: Currently, no mitigation is available for this vulnerability.
There are currently no legacy QID mappings associated with this CVE.