🛡️ CVE-2025-8419
🟡 CVSS 5.3 — Medium ✅ No Known Exploit CWE-93 NVD
5.3
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

Details

Severity MEDIUM
CVSS Score 5.3
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CWE CWE-93
Public Exploit ✅ No
Source NVD
Published 2025-08-06
Updated 2026-06-15
Modified 2026-01-08
Fix URL N/A

Affected Packages

Software From version Fixed in
keycloak — —
org.keycloak:keycloak-services 26.3.0 26.3.3

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