CRLF Injection Affecting keycloak-25 package, versions <25.0.6+e1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.45% (38th percentile)

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  • Snyk IDSNYK-ECHOLATEST-KEYCLOAK25-19435034
  • published31 Aug 2026
  • disclosed6 Aug 2025

Introduced: 6 Aug 2025

CVE-2025-8419  (opens in a new tab)
CWE-93  (opens in a new tab)

How to fix?

Upgrade Echo:latest keycloak-25 to version 25.0.6+e1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream keycloak-25 package and not the keycloak-25 package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1