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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.

PUBLISHED Reserved 2025-07-31 | Published 2025-08-06 | Updated 2025-09-04 | Assigner redhat




MEDIUM: 6.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Problem types

Improper Neutralization of CRLF Sequences ('CRLF Injection')

Product status

Default status
unaffected

Default status
affected

26.0.15-1 before *
unaffected

Default status
affected

26.0-18 before *
unaffected

Default status
affected

26.0-19 before *
unaffected

Default status
unaffected

Default status
affected

26.2.8-1 before *
unaffected

Default status
affected

26.2-8 before *
unaffected

Default status
affected

26.2-8 before *
unaffected

Timeline

2025-07-31:Reported to Red Hat.
2025-08-06:Made public.

References

access.redhat.com/errata/RHSA-2025:15336 (RHSA-2025:15336) vendor-advisory

access.redhat.com/errata/RHSA-2025:15337 (RHSA-2025:15337) vendor-advisory

access.redhat.com/errata/RHSA-2025:15338 (RHSA-2025:15338) vendor-advisory

access.redhat.com/errata/RHSA-2025:15339 (RHSA-2025:15339) vendor-advisory

access.redhat.com/security/cve/CVE-2025-8419 vdb-entry

bugzilla.redhat.com/show_bug.cgi?id=2385776 (RHBZ#2385776) issue-tracking

cve.org (CVE-2025-8419)

nvd.nist.gov (CVE-2025-8419)

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