CVE-2025-8419: keycloak — Fix

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.

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CVSS v3.1 Score

5.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Weakness Type (CWE)

CWE-93 CWE-93

Affected Products

Vendor	Product	Versions
redhat	keycloak	All

References

Advisories & Patches

https://access.redhat.com/security/cve/CVE-2025-8419 https://bugzilla.redhat.com/show_bug.cgi?id=2385776

Other References

https://access.redhat.com/errata/RHSA-2025:15336 https://access.redhat.com/errata/RHSA-2025:15337 https://access.redhat.com/errata/RHSA-2025:15338 https://access.redhat.com/errata/RHSA-2025:15339

Frequently Asked Questions

What is CVE-2025-8419? +

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. It has a CVSS v3.1 base score of 5.3 (MEDIUM).

How severe is CVE-2025-8419? +

CVE-2025-8419 has a CVSS v3.1 score of 5.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-8419? +

CVE-2025-8419 affects products from redhat, specifically: keycloak. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-8419? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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