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CVE-2025-8419

Org.keycloak/keycloak-services: keycloak smtp inject vulnerability

Published: Aug 6, 2025Updated: Jan 8, 2026 Sources: CVE List NVD GHSA BDUCWE-93
NVD MITRE
5.3CVSSMEDIUM
EPSS Score
0.4%
Top 70.1%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:LIntegrity
Low
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-93

Affected Products

keycloakKeycloak
On-prem
Security Products / identity-access-mgmt
Red Hat build of Keycloak 26.0Red Hat
On-prem
Operating Systems / linux-distro
Red Hat build of Keycloak 26.2Red Hat
On-prem
Operating Systems / linux-distro
keycloakredhat
On-prem
Operating Systems / linux-distro
org.keycloak:keycloak-servicesMavenOSS Libraries
keycloakoss-projectSecurity Productsaka keycloak-nodejs-auth-utils
red hatcommercialUSOperating Systemsaka red hat
redhatcommercialUSOperating Systemsaka red hat
mavenpackage-ecosystemOSS Libraries
and 3 more affected products View all →

Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available
Workaround Available

References

https://access.redhat.com/errata/RHSA-2025:15336
access.redhat.com
https://access.redhat.com/errata/RHSA-2025:15337
access.redhat.com
https://access.redhat.com/errata/RHSA-2025:15338
access.redhat.com
and 12 more references View all →

Timeline

Published
Aug 6, 2025
Last Updated
Jan 8, 2026

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